DOC AIRBUS | AMM A320FANALYZERS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The Built-In Test Equipment (BITE) of the Electronic Control Box (ECB) 59KD makes an analysis of the performance of the Auxiliary Power Unit (APU). The readout of this analysis is shown on the Multifunction Control and Display Units (MCDUs) 3CA1 (3CA2), through the function of the Centralized Fault Display System (CFDS) (Ref. AMM D/O 31-32-00-00).
** ON A/C NOT FOR ALL The Built-In Test Equipment (BITE) of the Electronic Control Box (ECB) 59KD makes an analysis of the performance of the Auxiliary Power Unit (APU). The readout of this analysis is shown on the Multifunction Control and Display Units (MCDUs) 3CA1 (3CA2), through the function of the Centralized Fault Display System (CFDS) (Ref. AMM D/O 31-32-00-00).
2. Component Location
** ON A/C NOT FOR ALL 
Analyzers - Component Location| ------------------------------------------------------------------------------- |
| FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA |
| DOOR REF. |
| ------------------------------------------------------------------------------- |
| 59KD ELECTRONIC CONTROL BOX (ECB) 152 827 49-61-34 |
| 8061KM ENG IDENT MODULE 315 315AL 49-73-31 |
3. System Description
The analysis of the APU is divided into two main groups:
The analysis of the APU is divided into two main groups:
- APU life data,
- APU fault data.
A. APU Life Data
(1) For purposes of long-term trend monitoring, the APU control system records the engine operating parameters. The recordings are in the form of snapshots taken at the beginning (or before) the starting state or at the end of the cooldown period after all the loads are removed from the APU.
The following parameters are recorded at the starting state:
The following parameters are recorded at the starting state:
- Aircraft Type,
- Aircraft I.D.,
- Engine I.D. Number,
- ECB Serial Number,
- ECB Part Number.
- NVM data record number,
- Date,
- GMT,
- APU Operation Hours,
- APU Start Cycles,
- EGT 1,
- EGT 2,
- Speed,
- P Inlet,
- T Inlet,
- Fuel Servo Valve current.
(2) In addition to the condition monitoring snapshot, the ECB software records the following parameters for operating history:
- Engine I.D. Number,
- ECB Serial Number,
- ECB Part Number,
- APU Start Attempts
counted when the ECB is in starting state and speed is > 2%. - APU Start Cycles
counted when the ECB enters the run state. - APU operating hours,
measured in one minute increments and recorded in one hour increments from the time the engine speed is greater than 55% until entering the shutdown state. - Oil Level Test Results,
- Flight Leg.
(3) The ECB records the following starting data for the APU:
(a) Data recorded at (or before) entering the starting state:
- Aircraft Type,
- Aircraft I.D.,
- Engine I.D. Number,
- ECB Serial Number,
- ECB Part Number,
- APU Operating Hours
- EGT 1,
- EGT 2,
- Speed,
- P Inlet,
- T Inlet,
- GBX Oil Temperature,
- IGV Position,
- BCV Position.
(b) Data recorded during the starting state:
- NVM data record number,
- Date,
- GMT,
- Speed at EGT light-off,
- Peak Valid EGT,
- EGT1 at time of peak valid EGT,
- EGT2 at time of peak valid EGT,
- Speed at time of peak valid EGT,
- Fuel Servo Valve current at time of peak valid EGT,
- APU Operating State at time of peak valid EGT,
- APU Start Attempts,
- APU Start Cycles,
- Start elapsed time.
(4) An engine identification module (I.D. module), in the form of a connector, is provided as an integral part of the engine. The module has resistors to provide the control unit with three voltage lines, matched to the engine I.D. number.
The engine I.D. number is read and stored in memory as part of the power-up initialization, after it is validated by taking three consecutive readings of the I.D. module.
The I.D. module is considered failed when all inputs are shorted, one or all inputs are open, a number greater than 2048 is read in or the three consecutive readings are not identical. The engine serial number shall be the sum of the I.D. number and the number 1000.
The engine I.D. number is read and stored in memory as part of the power-up initialization, after it is validated by taking three consecutive readings of the I.D. module.
The I.D. module is considered failed when all inputs are shorted, one or all inputs are open, a number greater than 2048 is read in or the three consecutive readings are not identical. The engine serial number shall be the sum of the I.D. number and the number 1000.
B. APU Fault Data
The Built-in Test Equipment (BITE) is a function incorporated in the ECB, which detects, localize and memorize failures. It ensures the detection and display (via CFDS) of failures related to the ECB, ECB interface circuirity, the APU systems and the APU itself.
The BITE operation is automatically but can also intiated manually.
Additionally the ECB records the failure history of the APU-system in its nonvolatile memory for further processing.
The Built-in Test Equipment (BITE) is a function incorporated in the ECB, which detects, localize and memorize failures. It ensures the detection and display (via CFDS) of failures related to the ECB, ECB interface circuirity, the APU systems and the APU itself.
The BITE operation is automatically but can also intiated manually.
Additionally the ECB records the failure history of the APU-system in its nonvolatile memory for further processing.
** ON A/C NOT FOR ALL
5. Interface
A. Aircraft Digital Interface
The ECB communicates to the aircraft via three seperate LOW SPEED ARINC 429 buses.
The ECB communicates to the aircraft via three seperate LOW SPEED ARINC 429 buses.
(1) ARINC 429 Input from the CFDS
The ECB uses this bus to receive specified data from the CFDS with applicable ARINC lables.
The ECB uses this bus to receive specified data from the CFDS with applicable ARINC lables.
(2) ARINC 429 Output to the CFDS
The ECB uses this bus to transmit data to the
The ECB uses this bus to transmit data to the
- CFDS
- SDAC
- AIDS.
(3) ARINC 429 Input from the ECS
The ECB uses this bus to receive specific data from the ECS.
The ECB uses this bus to receive specific data from the ECS.
** ON A/C NOT FOR ALL
7. Operation/Control and Indicating
The ECB 59KD operates in various states dependant on operating characteristics of the engines and signals from the aircraft.
A given state can contain several modes of operation. The states are as follows:
The ECB 59KD operates in various states dependant on operating characteristics of the engines and signals from the aircraft.
A given state can contain several modes of operation. The states are as follows:
- POWER-UP,
- WATCH,
- START PREPARATION,
- STARTING,
- RUN,
- COOLDOWN,
- SHUTDOWN.
A. POWER-UP State
The ECB enters this state when power is initially applied or when power is re-applied after an interruption in excess of the specified limits. The power up state lasts 3 seconds +/- 0.3 secs.
The ECB is capable of recognizing and recording the momentary occurence (150msec) of a start, or emergency stop signal. These signals could be issued by the aircraft shortly after power-up or at any time during power-up. When the ECB receives and validates a start signal within 100 msecs, the start in progress output is energised. The start in progress output also applies to the watch state. When an emergency stop signal is received, the ECB closes the air intake and then deactivates the aircraft relay output.
The ECB enters this state when power is initially applied or when power is re-applied after an interruption in excess of the specified limits. The power up state lasts 3 seconds +/- 0.3 secs.
The ECB is capable of recognizing and recording the momentary occurence (150msec) of a start, or emergency stop signal. These signals could be issued by the aircraft shortly after power-up or at any time during power-up. When the ECB receives and validates a start signal within 100 msecs, the start in progress output is energised. The start in progress output also applies to the watch state. When an emergency stop signal is received, the ECB closes the air intake and then deactivates the aircraft relay output.
B. WATCH State
After completion of the POWER-UP state the ECB enters the watch state. The ECB is still capable of recognizing and recording the occurence of start-, or emergency stop signals.
After completion of the POWER-UP state the ECB enters the watch state. The ECB is still capable of recognizing and recording the occurence of start-, or emergency stop signals.
C. START PREPARATION State
When the start command is received, speed is less or equal to 7% and there are no prohibitive conditions the ECB will enter the START PREPARATION state. In case the speed is greater than 7% the start is inhibited until speed is equal to or less than 7%, at which time the ECB enters the START PREPARATION state automatically without a new start command.
When the start command is received, speed is less or equal to 7% and there are no prohibitive conditions the ECB will enter the START PREPARATION state. In case the speed is greater than 7% the start is inhibited until speed is equal to or less than 7%, at which time the ECB enters the START PREPARATION state automatically without a new start command.
D. STARTING State
The starting state requires the ECB to operate the APU by conducting the start sequence. The receipt of a stop signal anytime during the STARTING state leads to a shutdown without a cooldown period.
The starting state is comnpleted and goes to run state 2 seconds after reaching 95% speed.
The starting state requires the ECB to operate the APU by conducting the start sequence. The receipt of a stop signal anytime during the STARTING state leads to a shutdown without a cooldown period.
The starting state is comnpleted and goes to run state 2 seconds after reaching 95% speed.
E. RUN State
After completion of the start sequence activities of the STARTING state, the system enters the RUN state. In the RUN state the closed-loop steady-state speed-control is implemented and the APU system is ready for loading (Ready to Load condition).
After completion of the start sequence activities of the STARTING state, the system enters the RUN state. In the RUN state the closed-loop steady-state speed-control is implemented and the APU system is ready for loading (Ready to Load condition).
F. COOLDOWN State
In the RUN state, receipt of a stop command will put the APU into a COOLDOWN state. The cooldown time is up to a maximum of 120 seconds.
In the RUN state, receipt of a stop command will put the APU into a COOLDOWN state. The cooldown time is up to a maximum of 120 seconds.
G. SHUTDOWN State
At any point during the START PREPARATION, STARTING, RUN or COOLDOWN states an APU shutdown may take place due to system faults or a stop command. The serverity of faults and how to they result in APU shutdown is shown in Table 1.
The ECB software recognizes the removal of the stop command or cycling of the master switch and the receipt of a start command during the shutdown state. When this occurs the ECB will not close the air intake, conduct the built in tests of the ROM checksum, speed injection, discrete and analog outputs and restart the APU when the speed drops below or equal to 7%.
At any point during the START PREPARATION, STARTING, RUN or COOLDOWN states an APU shutdown may take place due to system faults or a stop command. The serverity of faults and how to they result in APU shutdown is shown in Table 1.
The ECB software recognizes the removal of the stop command or cycling of the master switch and the receipt of a start command during the shutdown state. When this occurs the ECB will not close the air intake, conduct the built in tests of the ROM checksum, speed injection, discrete and analog outputs and restart the APU when the speed drops below or equal to 7%.
(1) Description of Table 1 / Table 2
A fixed Fault Code Number (FCN) is allocated to each detectable fault. Each FCN (with some exceptions) is linked to a LRU ID. Both, the FCN and the LRU ID, are shown in the LAST LEG REPORT, PREVIOUS FLIGHT REPORT etc. .
In many occasions two or more FCNs are linked to the same LRU ID. This happens when different FCNs (faults) are in conjunction with the same Line Replaceable Unit (LRU).
The Shutdown Severity Levels (SSL) of each FCN, are defined as follows:
1 = Enter SHUTDOWN state and transmit diagnostic messages.
2 = Enter SHUTDOWN state (unless operating in flight and TSO mode) and transmit diagnostic messages.
3 = Enter SHUTDOWN state if redundant source not available, unless operating in flight and in TSO mode. Transmit diagnostic messages.
4 = Continue with operation, transmit diagnostic messages.
X = Not applicable.
The following Table 1 is a list of all Fault Code Numbers (FCN) with their associated:;
Table 1
C = POWER-UP
D = WATCH
E = START PREPARATION
F = STARTING
G = RUN
H = COOLDOWN
I = SHUTDOWN
J = SELF TEST
For LRU ID definition refer to Table 2
A fixed Fault Code Number (FCN) is allocated to each detectable fault. Each FCN (with some exceptions) is linked to a LRU ID. Both, the FCN and the LRU ID, are shown in the LAST LEG REPORT, PREVIOUS FLIGHT REPORT etc. .
In many occasions two or more FCNs are linked to the same LRU ID. This happens when different FCNs (faults) are in conjunction with the same Line Replaceable Unit (LRU).
The Shutdown Severity Levels (SSL) of each FCN, are defined as follows:
1 = Enter SHUTDOWN state and transmit diagnostic messages.
2 = Enter SHUTDOWN state (unless operating in flight and TSO mode) and transmit diagnostic messages.
3 = Enter SHUTDOWN state if redundant source not available, unless operating in flight and in TSO mode. Transmit diagnostic messages.
4 = Continue with operation, transmit diagnostic messages.
X = Not applicable.
The following Table 1 is a list of all Fault Code Numbers (FCN) with their associated:;
- Fault Symptoms;
- LRU IDs (MCDU Message);
- Fault Class ;
- Shutdown Messages;
- Severity Levels.
Table 1
C = POWER-UP
D = WATCH
E = START PREPARATION
F = STARTING
G = RUN
H = COOLDOWN
I = SHUTDOWN
J = SELF TEST
For LRU ID definition refer to Table 2
| ------------------------------------------------------------------------------- |
| FCN ! FAULT SYMPTOM ! LRU ID !FAULT! MESSAGE ! SSL |
| ! ! !CLASS! ! C D E F G H I J |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 0 ! LCD STATIC PRESS. ! 13 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! SENSOR FAIL LOW ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 1 ! LCD STATIC PRESS. ! 13 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! SENSOR FAIL HIGH ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 2 ! LOW PMG VOLTAGE ! 53 ! 1 ! --- ! X X X 4 4 4 4 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 3 ! LCD DELTA P SENSOR ! 13 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! FAIL HIGH ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 4 ! INLET PRESS. SENSOR ! 29 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! LOW ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 5 ! INLET PRESS. SENSOR ! 29 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! HIGH ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 6 ! INLET PRESS. SENSOR ! 29 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! RATE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 7 ! N O T U S E D ! - ! ! --- ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 8 ! INLET TEMPERATURE ! 29 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! RTD OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 9 ! INLET TEMPERATURE ! 29 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! RTD SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 10 ! GEN. OIL TEMP. ! 25 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! SENSOR OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 11 ! GEN. OIL TEMP. ! 25 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! SENSOR SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 12 ! GBX TEMP SENSOR ! 38 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 13 ! GBX TEMP SENSOR ! 38 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 14 ! COLD JUNCTION RTD ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 15 ! COLD JUNCTION RTD ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 16 ! GBX DE-OILING VALVE ! 12 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 17 ! MAIN START ! 59 ! 1 ! --- ! X X X 4 X X X X |
| ! CONTACTOR OUTPUT ! ! ! ! |
| ! SHORT CIRCUIT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 18 ! B/U START CONTACTOR ! 10 ! 1 ! --- ! X X X 4 X X X X |
| ! OUTPUT SHORT ! ! ! ! |
| ! CIRCUIT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 19 ! START IN PROGRESS ! 45 ! 3 ! --- ! X X X 4 X X X X |
| ! OUTPUT SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 20 ! APU AVAILABLE OUTPUT! 3 ! 3 ! --- ! X X X X 4 4 X X |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 21 ! MAIN FUEL VALVE ! 21 ! 1 ! --- ! 4 X 4 4 4 4 X4 |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 22 ! BLEED VALVE OPEN ! 6 ! 2 ! --- ! X X X X 4 X X X |
| ! OUTPUT SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 23 ! EXCITER SHORTED ! 26 ! 1 ! --- ! X X X 4 X X XX |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 24 ! A/C RELAY WRAP FAULT! 14 ! 2 ! --- ! 4 4 4 4 4 4 X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 25 ! FLAP ACTUATOR ! 2 ! 2 ! --- ! 4 4 X X X X 4 4 |
| ! SHORTED-OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 26 ! FLAP ACTUATOR ! 2 ! 2 ! --- ! 4 4 X X X X 4 4 |
| ! SHORTED-CLOSE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 27 ! SPEED #1 LOW FAULT ! 14 ! 3 ! --- ! X X X 3 3 3 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 28 ! SPEED #1 HIGH FAULT ! 14 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 29 ! SPEED #1 DELTA FAULT! 40 ! 3 ! --- ! X X 3 3 3 3 3 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 30 ! SPEED #2 LOW FAULT ! 14 ! 3 ! --- ! X X X 3 3 3 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 31 ! SPEED #2 HIGH FAULT ! 14 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 32 ! SPEED #2 DELTA FAULT! 42 ! 3 ! --- ! X X 3 3 3 3 3 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 33 ! BOTH SPEED SENSORS ! 44 ! 1 ! LOSS OF SPEED ! 1 1 1 1 1 1 1 1 |
| ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 34 ! SPEED SENSORS DO ! ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! NOT MATCH ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 35 ! THERMOCOUPLE #1 ! 15 ! 3 ! --- ! X X X 3 3 3 X X |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 36 ! THERMOCOUPLE #1 ! 15 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 37 ! THERMOCOUPLE #2 ! 18 ! 3 ! --- ! X X X 3 3 3 X X |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 38 ! THERMOCOUPLE #2 ! 18 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 39 ! OIL FILTER ! 7 ! 2 ! --- ! 4 4 4 4 4 4 4 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 40 ! LOW ECB VOLTAGE ! ! 1 ! LOSS OF DC POWER ! X X X X 1 1 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 41 ! ENGINE I.D. MODULE ! 39 ! 3 ! --- ! 4 X X X X X X 4 |
| ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 42 ! FAIL TO LIGHT !26, 14, ! 1 ! NO FLAME ! X X X 1 X X X X |
| ! !21, 70, ! ! ! |
| ! !27 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 43 ! ILLOGICAL OIL PRESS.! 36 ! 2 ! --- ! 4 4 X X X X X 4 |
| ! SWITCH INPUT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 44 ! LOW OIL PRESSURE ON ! 37 ! 1 ! LOW OIL PRESSURE ! X X X 2 2 2 X X |
| ! GROUND ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 45(a)! LOW OIL PRESSURE ! 37 ! 1 ! LOW OIL PRESSURE ! X X X 2 2 2 X X |
| ! IN FLIGHT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 45(b)! LOW OIL PRESSURE ! 37 ! 1 ! --- ! X X X 2 2 2 X X |
| ! IN FLIGHT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 46(a)! HIGH OIL ! 9 ! 1 ! HIGH OIL ! X X X 2 2 2 X X |
| ! TEMPERATURE ! ! ! TEMPERATURE ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 46(b)! HIGH OIL ! 9 ! 1 ! --- ! X X X 2 2 2 X X |
| ! TEMPERATURE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 47(a)! GEN. HIGH OIL TEMP. ! 24 ! 1 ! GEN HIGH OIL TEMP ! X X X 2 2 2 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 47(b)! GEN. HIGH OIL TEMP. ! 24 ! 1 ! --- ! X X X 2 2 2 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 48 ! LOW OIL LEVEL ! 32 ! 2 ! --- ! 4 4 X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 49 ! OIL LEVEL RTD OPEN ! 35 ! 2 ! --- ! 4 4 X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 50 ! OIL LEVEL RTD ! 35 ! 2 ! --- ! 4 4 X X X X X 4 |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 51 ! FAIL TO CRANK !11, 59, ! 1 ! NO ACCELERATION ! X X X 1 X X X X |
| ! !10, 51, ! ! ! |
| ! !46 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 52 ! DECELERATION !14, 21, ! 1 ! NO ACCELERATION ! X X X 1 X X X X |
| ! !70, 23 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 53(a)! LOW ACCELERATION !21, 14, ! 1 ! NO ACCELERATION ! X X X 2 X X X X |
| ! RATE !12, 28, ! ! ! |
| ! !46, 68, ! ! ! |
| ! !21 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 53(b)! LOW ACCELERATION !21, 14, ! 1 ! --- ! X X X 2 X X X X |
| ! RATE !12, 28, ! ! ! |
| ! !46, 68, ! ! ! |
| ! !21 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 54 ! INPUT HYBRID U5 ! 14 ! 3 ! --- ! 4 X X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 55 ! INPUT HYBRID U7 ! 14 ! 3 ! --- ! 4 X X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 56 ! INPUT HYBRID U11 ! 14 ! 3 ! --- ! 4 X X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 57 ! ILLOGICAL INPUT FROM! 2 ! 2 ! --- ! 4 4 4 4 4 4 4 4 |
| ! FLAP ACTUATOR ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 58 ! FLAP ACTUATOR ! 2 ! 2 ! --- ! X 4 4 4 X X 4 4 |
| ! LOCKED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 59 ! FUEL SERVO SHORTED ! 21 ! 1 ! --- ! 4 X X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 60 ! FUEL SERVO OPEN ! 21 ! 1 ! --- ! 4 X X X X X X 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 61(a)! FUEL SERVO WRAP ! 14 ! 1 ! ECB FAILURE ! X X X 2 2 2 X X |
| ! FAULT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 61(b)! FUEL SERVO WRAP ! 14 ! 1 ! --- ! X X X 2 2 2 X X |
| ! FAULT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 62 ! IGV SERVO OPEN ! 28 ! 1 ! --- ! X X X X 4 X X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 63 ! IGV SERVO SHORTED ! 28 ! 1 ! --- ! X X X X 4 X X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 64 ! IGV OUTPUT ! 14 ! 2 ! --- ! X X X X 4 X X X |
| ! INTERNALLY SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 65 ! N O T U S E D ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 66 ! IGV OUTPUT ! 14 ! 2 ! ! X X X X 4 X X X |
| ! INTERNALLY OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 67 ! UNDERSPEED !14, 70, ! 1 ! UNDERSPEED ! X X X X 1 1 X X |
| ! ! 21 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 68 ! OVERSPEED !44, 14, ! 1 ! OVERSPEED ! X X X X 1 1 X X |
| ! ! 21 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 69 ! BLEED CONTROL VALVE ! 5 ! 1 ! --- ! X X X X 4 X X X |
| ! SERVO SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 70 ! BLEED CONTROL VALVE ! 5 ! 1 ! --- ! X X X X 4 X X X |
| ! SERVO OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 71 ! BCV OUTPUT ! 14 ! 1 ! --- ! X X X X 4 X X X |
| ! INTERNALLY SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 72 ! N O T U S E D ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 73 ! BCV OUTPUT ! 14 ! 2 ! --- ! X X X X 4 X X X |
| ! INTERNALLY OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 74 ! WATCHDOG ! 14 ! 1 ! ECB FAILURE ! 1 X X X X X X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 75 ! GBX DE-OILING VALVE ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 76 ! MAIN START ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! CONTACTOR OUTPUT ! ! ! ! |
| ! INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 77 ! FAULT INDICATOR ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 78 ! B/U START CONTACTOR ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OUTPUT INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 79 ! START IN PROGRESS ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OUTPUT INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 80 ! APU AVAILABLE ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OUTPUT INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 81 ! MAIN FUEL VALVE ! 14 ! 3 ! --- ! 4 X 4 4 4 4 X 4 |
| ! INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 82 ! BLEED VALVE OPEN ! 14 ! 2 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OUTPUT INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 83 ! EXCITER INTERNAL ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 84 ! GBX DE-OILING VALVE ! 12 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 85 ! MAIN START ! 11 ! 1 ! --- ! X X X 4 X X X X |
| ! CONTACTOR OUTPUT ! ! ! ! |
| ! OPEN CIRCUIT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 86 ! B/U START CONTACTOR ! 10 ! 1 ! --- ! X X X 4 X X X X |
| ! OUTPUT OPEN CIRCUIT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 87 ! START IN PROGRESS ! 45 ! 3 ! --- ! X X X 4 X X X X |
| ! OUTPUT OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 88 ! APU AVAILABLE ! 3 ! 3 ! --- ! X X X X 4 4 X X |
| ! OUTPUT OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 89 ! MAIN FUEL VALVE OPEN! 14, 21 ! 1 ! --- ! 4 X 4 4 4 4 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 90 ! BLEED VALVE OPEN ! 6 ! 2 ! --- ! 4 4 4 4 4 4 4 4 |
| ! OUTPUT OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 91 ! EXCITER OPEN ! 26 ! 1 ! --- ! X X X 4 X X X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 92 ! SPEED SENSOR #1 ! 40 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 93 ! SPEED SENSOR #1 ! 40 ! 3 ! --- ! 3 3 3 3 3 3 3 X |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 94 ! SPEED SENSOR #2 ! 42 ! 3 ! --- ! 3 3 3 3 3 3 3 3 |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 95 ! SPEED SENSOR #2 ! 42 ! 3 ! --- ! 3 3 3 3 3 3 3 X |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 96 ! LC SURGE ! 5 ! 1 ! --- ! X X X X 4 4 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 97(a)! LC SURGE AND BCV ! 5 ! 1 ! SURGE/REVERSE FLOW! X X X X 2 2 X X |
| ! FAILURE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 97(b)! LC SURGE AND BCV ! 5 ! 1 ! --- ! X X X X 2 2 X X |
| ! FAILURE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 98(a)! OVERTEMPERATURE !28, 13 ! 1 ! OVERTEMPERATURE ! X X X 2 2 2 X X |
| ! !18, 21 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 98(b)! OVERTEMPERATURE !28, 13 ! ! --- ! X X X 2 2 2 X X |
| ! !18, 21 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 99 ! MAIN FUEL VALVE ! 21 ! 1 ! APU FUEL VALVE ! X X X X X X 1 X |
| ! STUCK OPEN ! ! ! FAILED OPEN ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 100 ! SPEED #1 INJECTION ! 14 ! 2 ! --- ! 3 X X X X X X 3 |
| ! TEST FAILURE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 101 ! SPEED #2 INJECTION ! 14 ! 2 ! --- ! 3 X X X X X X 3 |
| ! TEST FAILURE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 102 ! BOTH THERMOCOUPLES ! 16 ! 1 ! SENSOR FAILURE ! 2 2 2 2 2 2 2 2 |
| (a) ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 102 ! BOTH THERMOCOUPLES ! 16 ! 1 ! --- ! 2 2 2 2 2 2 2 2 |
| (b) ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 103 ! LCD DELTA P SENSOR ! 13 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! FAIL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 104 ! RAM FAIL ! 14 ! 1 ! ECB FAILURE ! 1 1 1 1 1 1 1 1 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 105 ! PROCESSOR FAIL ! 14 ! 1 ! ECB FAILURE ! 1 1 1 1 1 1 1 1 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 106 ! NO ECS DATA ! 34 ! 3 ! --- ! X X X X 4 X X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 107 ! ARINC FAULT TX/R ! 14 ! 2 ! --- ! X 4 4 4 4 4 4 4 |
| ! FLAG STUCK LOW ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 108 ! A/D CONVERSION TIME ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 1 |
| ! TOO LONG ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 109 ! A/D 5V REFERENCE HI ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 1 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 110 ! A/D 5V REFERENCE LO ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 1 |
| -----+---------------------+--------+-----+ ------------------+---------------- |
| 111 ! A/D GROUND INPUT HI ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 1 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 112 ! FUEL FLOW PRESSURE ! 31 ! 2 ! --- ! X X X 4 4 4 X X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 113 ! TRUE EMERGENCY ! -- ! 1 ! EMERGENCY STOP ! 1 1 1 1 1 1 1 1 |
| ! STOP ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 114 ! BACKUP OVERSPEED ! 53 ! 1 ! SENSOR FAILURE ! X X X 1 X X X X |
| ! CIRCUIT FAILURE - ! ! ! ! |
| ! 50% SPEED CHECK ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 115 ! BACKUP OVERSPEED !14, 44, ! 1 ! BACKUP OVERSPEED ! X 1 1 1 1 1 1 1 |
| ! !21, 53 ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 116 ! B/U OVERSPEED ! 14 ! 1 ! BACKUP OVERSPEED ! 1 X X X X X X X |
| ! CIRCUIT FAILURE ! ! ! CIRCUIT FAILURE ! |
| ! DURING POWER-UP ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 117 ! FUEL SERVO OPEN ! 14 ! 1 ! --- ! 4 X X X X X X 4 |
| ! INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 118 ! IGV ACTUATOR ! 70, 5 ! 1 ! --- ! X X X X 4 4 4 X |
| ! MECHANICALLY FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 119 ! BCV MECHANICALLY ! 10, 28 ! 1 ! --- ! X X X X 4 4 4 X |
| ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 120 ! FLAP ACTUATOR NOT ! 2 ! 2 ! --- ! X X X X X X 4 X |
| ! CLOSED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 121 ! FLAP ACTUATOR NOT ! 1 ! 1 ! AIR INTAKE NOT ! X 1 1 X X X X 1 |
| ! OPEN ! ! ! OPEN ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 122 ! GEN AND GBX RTD'S ! 50 ! 1 ! SENSOR FAILURE ! 2 2 2 2 2 2 2 2 |
| (a) ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 122 ! GEN AND GBX RTD'S ! 50 ! 1 ! --- ! 2 2 2 2 2 2 2 2 |
| (b) ! FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 123 ! 10 VOLT EXCITATION ! 8 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! VOLTAGE FAILED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 124 ! A/C PIN I.D. ! 47 ! 3 ! --- ! 4 X X X X X X X |
| ! MISMATCH ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 125 ! FAULT OUTPUT ! 4 ! 3 ! --- ! 4 4 4 4 4 4 4 4 |
| ! SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 126 ! B/U START CONTACTOR ! 51 ! 1 ! --- ! X X X 4 X X X X |
| ! FAILED OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 127 ! B/U START CONTACTOR ! 10 ! 3 ! --- ! X X X 4 X X X X |
| ! FAILED CLOSED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 128 ! MAIN START CONTACTOR! 59 ! 1 ! --- ! X X X 4 X X X X |
| ! FAILED OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 129 ! MAIN START CONTACTOR! 59 ! 3 ! --- ! X X X 4 X X X X |
| ! FAILED CLOSED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 130 ! ALL ENGINE ID ! 39 ! 3 ! --- ! 4 X X X X X X 4 |
| ! RESISTORS OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 131 ! N O T U S E D ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 132 ! BOTH SPEED INJECTION! 14 ! 1 ! ECB FAILURE ! 1 X X X X X X 1 |
| ! TEST FAILURE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 133 ! APU FUEL LOW PRESS ! 54 ! 3 ! --- ! X X X X X X 4 X |
| ! VALVE OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 134 ! APU FUEL LOW PRESS ! 54 ! 3 ! --- ! X X X X X X 4 X |
| ! VALVE SHORTED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 135 ! APU FUEL LOW PRESS ! 14 ! 3 ! --- ! X 4 4 4 4 4 4 X |
| ! VALVE INTERNAL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 136 ! TEST EMERGENCY ! -- ! 3 ! --- ! 4 4 X X X X X X |
| ! STOP ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 137 ! N O T U S E D ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 138 ! BCV LVDT FAIL DURING! 5 ! 1 ! --- ! X X X 4 X X X X |
| ! COMPENSATION ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 139 ! IGV LVDT FAIL DURING! 28 ! 1 ! --- ! X X X 4 X X X X |
| ! COMPENSATION ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 140 ! ILLOGICAL OIL PRESS ! 55 ! 1 ! SENSOR FAILURE ! 2 2 X X X X X 2 |
| (a) ! SW INPUT & OIL LEVEL! ! ! ! |
| ! RTD OPEN OR SHORT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 140 ! ILLOGICAL OIL PRESS ! 55 ! 1 ! --- ! 2 2 X X X X X 2 |
| (b) ! SW INPUT & OIL LEVEL! ! ! ! |
| ! RTD OPEN OR SHORT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 141 ! ILLOGICAL OIL PRESS ! 56 ! 1 ! SENSOR FAILURE ! 2 2 X X X X X 2 |
| (a) ! SW INPUT & LOW OIL ! ! ! ! |
| ! LEVEL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 141 ! ILLOGICAL OIL PRESS ! 56 ! 1 ! --- ! 2 2 X X X X X 2 |
| (b) ! SW INPUT & LOW OIL ! ! ! ! |
| ! LEVEL ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 142 ! BOTH SPEEDS HIGH ! 14 ! 1 ! LOS OF SPEED ! 1 1 1 1 1 1 1 1 |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 143 ! OSCILLATING LC SURGE! 5 ! 1 ! SURGE/REVERSE FLOW! X X X X 2 2 X X |
| (a) ! AND BLEED VLV.FAILED! ! ! ! |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 143 ! OSCILLATING LC SURGE! 5 ! 1 ! --- ! X X X X 2 2 X X |
| (b) ! AND BLEED VLV.FAILED! ! ! ! |
| ! OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 144 ! BACKUP OVERSPEED ! 53 ! 1 ! SENSOR FAILURE ! X X X 1 X X X X |
| ! CIRCUIT FAILURE - ! ! ! ! |
| ! 60% SPEED CHECK ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 145 ! SPD SENSOR #1 FAIL ! 41 ! 1 ! LOSS OF SPEED ! 1 1 1 1 1 1 1 1 |
| ! & ECB SPEED #2 FLT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 146 ! SPD SENSOR #2 FAIL ! 43 ! 1 ! LOSS OF SPEED ! 1 1 1 1 1 1 1 1 |
| ! & ECB SPEED #1 FLT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 147 ! N O T U S E D ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 148 ! N O T U S E D ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 149 ! LCD DELTA P SENSOR ! 13 ! 1 ! --- ! X X X 4 4 4 4 X |
| ! FAILED LOW ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 150 ! NULL TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 151 ! DISPATCH COMMAND ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| ! OVERRUN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 152 ! CFDS OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 153 ! LOW PR TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 154 ! SLOW TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 155 ! MED TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 156 ! MED TASK3 OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 157 ! ONE HZ TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 158 ! ROM CALC TASK ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| ! OVERRUN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 159 ! POWER UP TASK ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| ! OVERRUN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 160 ! MIT TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 161 ! RAM INT TASK ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| ! OVERRUN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 162 ! ROOT TASK OVERRUN ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 163 ! DIVIDE BY ZERO ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| ! INTERRUPT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 164 ! FAULTY INTERRUPT ! 14 ! 1 ! ECB FAILURE ! 1 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 165 ! ECS INT FREQ FLT ! 14 ! 3 ! --- ! 4 4 4 4 4 4 4 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 166 ! CFDS INT FREQ FLT ! 14 ! 3 ! --- ! X 4 4 4 4 4 4 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 167 ! STACK RETURN FAULT ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 X |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 168 ! MAIN FUEL VALVE ! 14 ! 1 ! APU FUEL VALVE ! X 1 X X X X 1 X |
| ! INTERNAL DURING ! ! ! FAILED OPEN ! |
| ! WATCH OR SHUTDOWN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 169 ! OSCILLATING LC ! 48 ! 1 ! --- ! X X X X 4 4 X X |
| ! SURGE ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 170 ! PRESSURE MISMATCH !29, 13 ! 1 ! --- ! 4 4 4 4 4 4 4 4 |
| ! FAULT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 171 ! DELPQP LIMIT ! 13 ! 1 ! --- ! X X X X 4 X X X |
| ! EXCEEDED ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 172 ! BCV MECHANICALLY ! 5 ! 1 ! --- ! X X X X 4 4 X X |
| ! FAILED OPEN ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 173 ! TASK CONTROL DATA ! 14 ! 1 ! ECB FAILURE ! X 1 1 1 1 1 1 1 |
| ! FAULT ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
| 174 ! BCV LVDT FAIL DURING! 69 ! 1 ! --- ! X X X X 4 X X X |
| ! MAX COMPENSATION ! ! ! ! |
| -----+---------------------+--------+-----+-------------------+---------------- |
(2) LRU ID Definition
Table 2
Table 2
| --------+-----------------+--------------------------------------------------- |
| LRU ID ! ATA CHAPTER ! MCDU MESSAGE |
| --------+-----------------+--------------------------------------------------- |
| 0 ! N O T U S E D ! |
| --------+-----------------+--------------------------------------------------- |
| 1 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 2 ! 49-16-51 ! INLET FLAP ACTR (4015KM) |
| --------+-----------------+---------------------------------------------------- |
| 3 ! 49-61-00 ! WRG: ECB PIN AB-J6 |
| --------+-----------------+---------------------------------------------------- |
| 4 ! 49-61-00 ! WRG: ECB PIN AB-H5 |
| --------+-----------------+---------------------------------------------------- |
| 5 ! 49-51-53 ! BLEED CTL VLV (8051KM) |
| --------+-----------------+---------------------------------------------------- |
| 6 ! 49-61-00 ! WRG: ECB PIN AB-H8 |
| --------+-----------------+---------------------------------------------------- |
| 7 ! 49-91-41 ! GEN SCAV FILTER (8069KM) |
| ! ! AND LUBE FILTER (8076KM) |
| --------+-----------------+---------------------------------------------------- |
| 8 ! 49-61-34 ! ECB (59KD) / |
| ! ! APU HARNESS (8001KM) |
| --------+-----------------+---------------------------------------------------- |
| 9 ! 49-91-44 ! CHECK OIL COOLER ASSY |
| ! ! (8079KM) |
| --------+-----------------+---------------------------------------------------- |
| 10 ! 49-42-55 ! CONTACTOR (10KA) |
| --------+-----------------+---------------------------------------------------- |
| 11 ! 24-38-00 ! ACFT BAT NOT SELECTED / |
| ! ! CONTACTOR (5KA) |
| --------+-----------------+---------------------------------------------------- |
| 12 ! 49-91-49 ! DE-OILING SOL (8083KM) |
| --------+-----------------+---------------------------------------------------- |
| 13 ! 49-51-12 ! BLD FLOW XDCR (8039KM) |
| --------+-----------------+---------------------------------------------------- |
| 14 ! 49-61-34 ! ECB (59KD) |
| --------+-----------------+---------------------------------------------------- |
| 15 ! 49-72-15 ! EGT TC1 (8057KM1) |
| --------+-----------------+---------------------------------------------------- |
| 16 ! 49-72-15 ! EGT TC1 (8057KM1) AND |
| ! ! EGT TC2 (8057KM2) |
| --------+-----------------+---------------------------------------------------- |
| 17 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 18 ! 49-72-15 ! EGT TC2 (8057KM2) |
| --------+-----------------+---------------------------------------------------- |
| 19 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 20 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 21 ! 49-32-11 ! FUEL CTL UNIT (8022KM) |
| --------+-----------------+---------------------------------------------------- |
| 22 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 23 ! 49-32-11 ! FUEL CTL UNIT (8022KM) / |
| ! ! FLOW DIVIDER (8024KM) |
| --------+-----------------+---------------------------------------------------- |
| 24 ! 49-91-00 ! CHECK OIL SYSTEM / |
| ! ! GENERATOR (8XS) |
| --------+-----------------+---------------------------------------------------- |
| 25 ! 24-23-51 ! GENERATOR (8XS) |
| --------+-----------------+---------------------------------------------------- |
| 26 ! 49-41-38 ! IGNITION UNIT (8030KM) |
| --------+-----------------+---------------------------------------------------- |
| 27 ! 49-41-38 ! IGNITION UNIT (8030KM) / |
| ! ! FUEL CTL UNIT (8022KM) |
| --------+-----------------+---------------------------------------------------- |
| 28 ! 49-23-51 ! IGV ACTR (8014KM) |
| --------+-----------------+---------------------------------------------------- |
| 29 ! 49-23-17 ! INLET T-P SNSR (8013KM) |
| --------+-----------------+---------------------------------------------------- |
| 30 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 31 ! 28-22-14 ! FUEL LOW PRESS / LOW |
| ! ! FUEL PRESS SW (5030QM) |
| --------+-----------------+---------------------------------------------------- |
| 32 ! 49-93-00 ! LOW OIL LEVEL |
| --------+-----------------+---------------------------------------------------- |
| 33 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 34 ! 21-63-34 ! NO DATA FROM ECS |
| --------+-----------------+---------------------------------------------------- |
| 35 ! 49-93-17 ! OIL LEVEL SNSR (8089KM) |
| --------+-----------------+---------------------------------------------------- |
| 36 ! 49-94-14 ! OIL PRESS SW (8091KM) |
| --------+-----------------+---------------------------------------------------- |
| 37 ! 49-91-00 ! CHECK OIL LEAKAGE / |
| ! ! OIL PRESS SW (8091KM) |
| --------+-----------------+---------------------------------------------------- |
| 38 ! 49-91-51 ! OIL TEMP SNSR (8084KM) |
| --------+-----------------+---------------------------------------------------- |
| 39 ! 49-73-31 ! SERIAL NUMBER ENCODER |
| ! ! (8061KM) |
| --------+-----------------+---------------------------------------------------- |
| 40 ! 49-71-13 ! SPEED SNSR (8060KM1) |
| --------+-----------------+---------------------------------------------------- |
| 41 ! 49-71-13 ! SPD SNSR1 (8060KM1) AND |
| ! ! ECB (59KD) |
| --------+-----------------+---------------------------------------------------- |
| 42 ! 49-71-13 ! SPEED SNSR2 (8060KM2) |
| --------+-----------------+---------------------------------------------------- |
| 43 ! 49-71-13 ! SPD SNSR2 (8060KM1) AND |
| ! ! ECB (59KD) |
| --------+-----------------+---------------------------------------------------- |
| 44 ! 49-71-13 ! SPD SNSR1 (8060KM1) AND |
| ! ! SPD SNSR2 (8060KM2) |
| --------+-----------------+---------------------------------------------------- |
| 45 ! 49-61-00 ! WRG: ECB PIN AB-H9 |
| --------+-----------------+---------------------------------------------------- |
| 46 ! 49-42-51 ! STARTER MOTOR (8KA) / |
| ! ! STARTER CLUTCH (8033KM) |
| --------+-----------------+---------------------------------------------------- |
| 47 ! 49-61-00 ! WRG: ACFT TYPE PIN / |
| ! ! ECB (59KD) |
| --------+-----------------+---------------------------------------------------- |
| 48 ! 49-51-12 ! BLD FLOW XDCR (8039KM) / |
| ! ! BLD CTL VLV (8051KM) |
| --------+-----------------+---------------------------------------------------- |
| 49 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 50 ! 49-91-51 ! OIL TEMP SNSR (8084KM) |
| ! ! AND GENERATOR (8XS) |
| --------+-----------------+---------------------------------------------------- |
| 51 ! 49-42-00 ! CURRENT LIMITER (6KA) / |
| ! ! CONTACTOR (10KA) |
| --------+-----------------+---------------------------------------------------- |
| 52 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 53 ! 49-52-53 ! COOLING FAN PMG ASSY |
| ! ! (8055KM) |
| --------+-----------------+---------------------------------------------------- |
| 54 ! 26-22-00 ! FIRE EMERG STOP RELAY |
| ! ! (6WF) |
| --------+-----------------+---------------------------------------------------- |
| 55 ! 49-94-14 ! OIL PRS SW (8019KM) AND |
| ! ! OIL LVL SNSR (8089KM) |
| --------+-----------------+---------------------------------------------------- |
| 56 ! 49-94-14 ! OIL PRESS SW (8091KM) |
| ! ! AND LOW OIL LEVEL |
| --------+-----------------+---------------------------------------------------- |
| 57 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 58 ! N O T U S E D ! |
| --------+-----------------+---------------------------------------------------- |
| 59 ! 49-42-55 ! CONTACTOR (5KA) |
| --------+-----------------+---------------------------------------------------- |
| 60 ! ! |
| to ! N O T U S E D ! |
| 67 ! ! |
| --------+-----------------+---------------------------------------------------- |
| 68 ! 49-32-13 ! FLOW DIVIDER (8024KM) |
| --------+-----------------+---------------------------------------------------- |
| 69 ! 49-51-53 ! BLEED CTL VLV (8051KM) / |
| ! ! FUEL CTL UNIT (8022KM) |
| --------+-----------------+---------------------------------------------------- |
| 70 ! 28-22-00 ! CHECK APU FUEL SUPPLY |
| --------+-----------------+---------------------------------------------------- |
H. Fault Code Numbers (FCN)
A fixed Fault Code Number (FCN) is allocated to each detectable fault. Each FCN (with some exceptions) is linked to a CFDS maintenance message. Both, the FCN and the CFDS maintenance message, are shown the LAST LEG REPORT, PREVIOUS FLIGHT REPORT etc..
In many occasions two or more FCNs are linked to the same CFDS message. This happens when different FCNs (faults) are in conjunction with the same Line Replaceable Unit (LRU).
Example:
You can find complete enumeration of all FCNs with their associated CFDS messages in table that follows:
A fixed Fault Code Number (FCN) is allocated to each detectable fault. Each FCN (with some exceptions) is linked to a CFDS maintenance message. Both, the FCN and the CFDS maintenance message, are shown the LAST LEG REPORT, PREVIOUS FLIGHT REPORT etc..
In many occasions two or more FCNs are linked to the same CFDS message. This happens when different FCNs (faults) are in conjunction with the same Line Replaceable Unit (LRU).
Example:
| ------------------------------------------------------------------------------- |
| FCN ! FAULT DESCRIPTION ! LRU ID ! CFDS MESSAGE ! S/D MESSAGE ! CLASS |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 004 ! INLET PRESS. SENSOR ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! LOW ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 005 ! INLET PRESS. SENSOR ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! HIGH ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 006 ! INLET PRESS. SENSOR ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! RATE ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
(1) Fault Code Numbers (FCN)
Table
Table
| ------------------------------------------------------------------------------- |
| FCN ! FAULT DESCRIPTION ! LRU ID ! CFDS MESSAGE ! S/D MESSAGE ! CLASS |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 000 ! LCD STATIC PRESS. ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! SENSOR FAIL LOW ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 001 ! LCD STATIC PRESS. ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! SENSOR FAIL HIGH ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 002 ! LOW PMG VOLTAGE ! 53 ! COOLING FAN PMG ! --- ! 1 |
| ! ! ! ASSY (8055KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 003 ! LCD DELTA P SENSOR ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! FAIL HIGH ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 004 ! INLET PRESS. SENSOR ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! LOW ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 005 ! INLET PRESS. SENSOR ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! HIGH ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 006 ! INLET PRESS. SENSOR ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! RATE ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 007 ! NOT USED ! -- ! ---- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 008 ! INLET TEMPERATURE ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! RTD OPEN ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 009 ! INLET TEMPERATURE ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! RTD SHORTED ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 010 ! GEN. OIL TEMP. SENSOR ! 25 ! GENERATOR (8XS) ! --- ! 3 |
| ! OPEN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 011 ! GEN. OIL TEMP. SENSOR ! 25 ! GENERATOR (8XS) ! --- ! 3 |
| ! SHORTED ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 012 ! GBX TEMP SENSOR OPEN ! 38 ! OIL TEMP SNSR ! --- ! 3 |
| ! ! ! (8084KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 013 ! GBX TEMP SENSOR ! 38 ! OIL TEMP SNSR ! --- ! 3 |
| ! SHORTED ! ! (8084KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 014 ! COLD JUNCTION RTD ! 14 ! ECB (59KD) ! --- ! 3 |
| ! OPEN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 015 ! COLD JUNCTION RTD ! 14 ! ECB (59KD) ! --- ! 3 |
| ! SHORTED ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 016 ! GBX DE-OILING VALVE ! 12 ! DE-OILING SOL ! --- ! 3 |
| ! SHORTED ! ! (8083KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 017 ! MAIN START CONTACTOR ! 59 ! CONTACTOR (5KA) ! --- ! 1 |
| ! OUTPUT SHORT CIRCUIT ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 018 ! B/U START CONTACTOR ! 10 ! CONTACTOR (10KA)! --- ! 1 |
| ! OUTPUT SHORT CIRCUIT ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 019 ! START IN PROGRESS ! 45 ! WRG: ECB PIN ! --- ! 3 |
| ! OUTPUT SHORTED ! ! AB-H9 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 020 ! APU AVAILABLE OUTPUT ! 3 ! WRG: ECB PIN ! --- ! 3 |
| ! SHORTED ! ! AB-J6 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 021 ! MAIN FUEL VALVE ! 21 ! FUEL CTL UNIT ! --- ! 1 |
| ! SHORTED ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 022 ! BLEED VALVE OPEN ! 6 ! WRG: ECB PIN ! --- ! 2 |
| ! OUTPUT SHORTED ! ! AB-H8 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 023 ! EXCITER SHORTED ! 26 ! IGNITION UNIT ! --- ! 1 |
| ! ! ! (8030KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 024 ! A/C RELAY WRAP FAULT ! 14 ! ECB (59KD) ! --- ! 2 |
| ! ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 025 ! FLAP ACTUATOR ! 2 ! INLET FLAP ACTR ! --- ! 2 |
| ! SHORTED-OPEN ! ! (4015KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 026 ! FLAP ACTUATOR ! 2 ! INLET FLAP ACTR ! --- ! 2 |
| ! SHORTED-CLOSE ! ! (4015KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 027 ! SPEED N1 LOW FAULT ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 028 ! SPEED N1 HIGH FAULT ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 029 ! SPEED N1 DELTA FAULT ! 40 ! SPEED SNSR1 ! --- ! 3 |
| ! ! ! (8060KM1) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 030 ! SPEED N2 LOW FAULT ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 031 ! SPEED N2 HIGH FAULT ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 032 ! SPEED N2 DELTA FAULT ! 42 ! SPEED SNSR2 ! --- ! 3 |
| ! ! ! (8060KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 033 ! BOTH SPEED SENSORS ! 44 ! SPD SNSR1 ! LOSS OF SPEED ! 1 |
| ! FAILED ! ! (8060KM1) AND ! ! |
| ! ! ! SPD SNSR2 ! ! |
| ! ! ! (8060KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 034 ! SPEED SENSORS DO NOT ! -- ! ---- ! --- ! 3 |
| ! MATCH ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 035 ! THERMOCOUPLE N1 ! 15 ! EGT TC1 ! --- ! 3 |
| ! SHORTED ! ! (8057KM1) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 036 ! THERMOCOUPLE N1 OPEN ! 15 ! EGT TC1 ! --- ! 3 |
| ! ! ! (8057KM1) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 037 ! THERMOCOUPLE N2 ! 18 ! EGT TC2 ! --- ! 3 |
| ! SHORTED ! ! (8057KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 038 ! THERMOCOUPLE N2 OPEN ! 18 ! EGT TC2 ! --- ! 3 |
| ! ! ! (8057KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 039 ! OIL FILTER ! 7 ! GEN SCAV FILTER ! --- ! 2 |
| ! ! ! (8069KM) AND ! ! |
| ! ! ! LUBE FILTER ! ! |
| ! ! ! (8076KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 040 ! LOW ECB VOLTAGE ! -- ! ---- ! LOSS OF DC ! 1 |
| ! ! ! ! POWER ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 041 ! ENGINE I.D. MODULE ! 39 ! SERIAL NUMBER ! --- ! 3 |
| ! FAILED ! ! ENCODER ! ! |
| ! ! ! (8061KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 042 ! FAIL TO LIGHT ! 26 ! IGNITION UNIT ! NO FLAME ! 1 |
| ! ! ! (8030KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 042 ! FAIL TO LIGHT ! 14 ! ECB (59KD) ! NO FLAME ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 042 ! FAIL TO LIGHT ! 21 ! FUEL CTL UNIT ! NO FLAME ! 1 |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 042 ! FAIL TO LIGHT ! 70 ! CHECK APU FUEL ! NO FLAME ! 1 |
| ! ! ! SUPPLY ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 042 ! FAIL TO LIGHT ! 27 ! IGNITION UNIT ! NO FLAME ! 1 |
| ! ! ! (8030KM)/ ! ! |
| ! ! ! FUEL CTL UNIT ! ! |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 043 ! ILLOGICAL OIL PRESS. ! 36 ! OIL PRESS SW ! --- ! 2 |
| ! SWITCH INPUT ! ! (8091KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 044 ! LOW OIL PRESSURE ON ! 37 ! CHECK OIL ! LOW OIL ! 1 |
| ! GROUND ! ! LEAKAGE/OIL ! PRESSURE ! |
| ! ! ! PRESS SW ! ! |
| ! ! ! (8091KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 045 ! LOW OIL PRESSURE IN ! 37 ! CHECK OIL ! LOW OIL ! 1 |
| ! FLIGHT ! ! LEAKAGE/OIL ! PRESSURE ! |
| ! ! ! PRESS SW ! ! |
| ! ! ! (8091KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 046 ! HIGH OIL TEMPERATURE ! 9 ! CHECK OIL COOLER! HIGH OIL ! 1 |
| ! ! ! ASSY (8079KM) ! TEMPERATURE ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 047 ! GEN. HIGH OIL ! 24 ! CHECK OIL SYSTEM! GEN HIGH OIL ! 1 |
| ! TEMPERATURE ! ! /GENERATOR (8XS)! TEMP ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 048 ! LOW OIL LEVEL ! 32 ! LOW OIL LEVEL ! --- ! 2 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 049 ! OIL LEVEL RTD OPEN ! 35 ! OIL LEVEL SNSR ! --- ! 2 |
| ! ! ! (8089KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 050 ! OIL LEVEL RTD ! 35 ! OIL LEVEL SNSR ! --- ! 2 |
| ! SHORTED ! ! (8089KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 051 ! FAIL TO CRANK ! 11 ! ACFT BAT NOT ! NO ! 1 |
| ! ! ! SELECTED/ ! ACCELERATION ! |
| ! ! ! CONTACTOR (5KA) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 051 ! FAIL TO CRANK ! 59 ! CONTACTOR (5KA) ! NO ! 1 |
| ! ! ! ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 051 ! FAIL TO CRANK ! 10 ! CONTACTOR (10KA)! NO ! 1 |
| ! ! ! ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 051 ! FAIL TO CRANK ! 51 ! CURRENT LIMITER ! NO ! 1 |
| ! ! ! (6KA)/CONTACTOR ! ACCELERATION ! |
| ! ! ! (10KA) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 051 ! FAIL TO CRANK ! 46 ! STARTER MOTOR ! NO ! 1 |
| ! ! ! (8KA)/STARTER ! ACCELERATION ! |
| ! ! ! CLUTCH (8033KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 052 ! DECELERATION ! 14 ! ECB (59KD) ! NO ! 1 |
| ! ! ! ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 052 ! DECELERATION ! 21 ! FUEL CTL UNIT ! NO ! 1 |
| ! ! ! (8022KM) ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 052 ! DECELERATION ! 70 ! CHECK APU FUEL ! NO ! 1 |
| ! ! ! SUPPLY ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 052 ! DECELERATION ! 23 ! FUEL CTL UNIT ! NO ! 1 |
| ! ! ! (8022KM)/FLOW ! ACCELERATION ! |
| ! ! ! DIVIDER (8024KM)! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 21 ! FUEL CTL UNIT ! NO ! 1 |
| ! ! ! (8022KM) ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 14 ! ECB (59KD) ! NO ! 1 |
| ! ! ! ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 12 ! DE-OILING SOL ! NO ! 1 |
| ! ! ! (8083KM) ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 28 ! IGV ACTR ! NO ! 1 |
| ! ! ! (8014KM) ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 46 ! STARTER MOTOR ! NO ! 1 |
| ! ! ! (8KA)/STARTER ! ACCELERATION ! |
| ! ! ! CLUTCH (8033KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 68 ! FLOW DIVIDER ! NO ! 1 |
| ! ! ! (8024KM) ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 053 ! LOW ACCELERATION RATE ! 21 ! FUEL CTL UNIT ! NO ! 1 |
| ! ! ! (8022KM) ! ACCELERATION ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 054 ! INPUT HYBRID U5 ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 055 ! INPUT HYBRID U7 ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 056 ! INPUT HYBRID U11 ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 057 ! ILLOGICAL INPUT FROM ! 2 ! INLET FLAP ACTR ! --- ! 2 |
| ! FLAP ACTUATOR ! ! (4015KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 058 ! FLAP ACTUATOR LOCKED ! 2 ! INLET FLAP ACTR ! --- ! 2 |
| ! ! ! (4015KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 059 ! FUEL SERVO SHORTED ! 21 ! FUEL CTL UNIT ! --- ! 1 |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 060 ! FUEL SERVO OPEN ! 21 ! FUEL CTL UNIT ! --- ! 1 |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 061 ! FUEL SERVO WRAP FAULT ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 062 ! IGV SERVO OPEN ! 28 ! IGV ACTR ! --- ! 1 |
| ! ! ! (8014KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 063 ! IGV SERVO SHORTED ! 28 ! IGV ACTR ! --- ! 1 |
| ! ! ! (8014KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 064 ! IGV OUTPUT INTERNALLY ! 14 ! ECB (59KD) ! --- ! 2 |
| ! SHORTED ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 065 ! NOT USED ! -- ! ---- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 066 ! IGV OUTPUT INTERNALLY ! 14 ! ECB (59KD) ! --- ! 2 |
| ! OPEN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 067 ! UNDERSPEED ! 14 ! ECB (59KD) ! UNDERSPEED ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 067 ! UNDERSPEED ! 70 ! CHECK APU FUEL ! UNDERSPEED ! 1 |
| ! ! ! SUPPLY ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 067 ! UNDERSPEED ! 21 ! FUEL CTL UNIT ! UNDERSPEED ! 1 |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 068 ! OVERSPEED ! 44 ! SPD SNSR1 ! OVERSPEED ! 1 |
| ! ! ! (8060KM1) AND ! ! |
| ! ! ! SPD SNSR2 ! ! |
| ! ! ! (8060KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 068 ! OVERSPEED ! 14 ! ECB (59KD) ! OVERSPEED ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 068 ! OVERSPEED ! 21 ! FUEL CTL UNIT ! OVERSPEED ! 1 |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 069 ! BLEED CONTROL VALVE ! 5 ! BLEED CTL VLV ! --- ! 1 |
| ! SERVO SHORTED ! ! (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 070 ! BLEED CONTROL VALVE ! 5 ! BLEED CTL VLV ! --- ! 1 |
| ! SERVO OPEN ! ! (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 071 ! BCV OUTPUT INTERNALLY ! 14 ! ECB (59KD) ! --- ! 1 |
| ! SHORTED ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 072 ! NOT USED ! - ! ---- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 073 ! BCV OUTPUT INTERNALLY ! 14 ! ECB (59KD) ! --- ! 2 |
| ! OPEN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 074 ! WATCHDOG ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 075 ! GBX DE-OILING VALVE ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 076 ! MAIN START CONTACTOR ! 14 ! ECB (59KD) ! --- ! 3 |
| ! OUTPUT INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 077 ! FAULT INDICATOR ! 14 ! ECB (59KD) ! --- ! 3 |
| ! INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 078 ! B/U START CONTACTOR ! 14 ! ECB (59KD) ! --- ! 3 |
| ! OUTPUT INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 079 ! START IN PROGRESS ! 14 ! ECB (59KD) ! --- ! 3 |
| ! OUTPUT INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 080 ! APU AVAILABLE OUTPUT ! 14 ! ECB (59KD) ! --- ! 3 |
| ! INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 081 ! MAIN FUEL VALVE ! 14 ! ECB (59KD) ! --- ! 3 |
| ! INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 082 ! BLEED VALVE OPEN ! 14 ! ECB (59KD) ! --- ! 2 |
| ! OUTPUT INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 083 ! EXCITER INTERNAL ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 084 ! GBX DE-OILING VALVE ! 12 ! DE-OILING SOL ! --- ! 3 |
| ! OPEN ! ! (8083KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 085 ! MAIN START CONTACTOR ! 11 ! ACFT BAT NOT ! --- ! 1 |
| ! OUTPUT OPEN CIRCUIT ! ! SELECTED/ ! ! |
| ! ! ! CONTACTOR (5KA) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 086 ! B/U START CONTACTOR ! 10 ! CONTACTOR (10KA)! --- ! 1 |
| ! OUTPUT OPEN CIRCUIT ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 087 ! START IN PROGRESS ! 45 ! WRG: ECB PIN ! --- ! 3 |
| ! OUTPUT OPEN ! ! AB-H9 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 088 ! APU AVAILABLE OUTPUT ! 3 ! WRG: ECB PIN ! --- ! 3 |
| ! OPEN ! ! AB-J6 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 089 ! MAIN FUEL VALVE OPEN ! 14 ! ECB (59KD) ! --- ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 089 ! MAIN FUEL VALVE OPEN ! 21 ! FUEL CTL UNIT ! --- ! 1 |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 090 ! BLEED VALVE OPEN ! 6 ! WRG: ECB PIN ! --- ! 2 |
| ! OUTPUT OPEN ! ! AB-H8 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 091 ! EXCITER OPEN ! 26 ! IGNITION UNIT ! --- ! 1 |
| ! ! ! (8030KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 092 ! SPEED SENSOR N1 OPEN ! 40 ! SPEED SNSR1 ! --- ! 3 |
| ! ! ! (8060KM1) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 093 ! SPEED SENSOR N1 ! 40 ! SPEED SNSR1 ! --- ! 3 |
| ! SHORTED ! ! (8060KM1) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 094 ! SPEED SENSOR N2 OPEN ! 42 ! SPEED SNSR2 ! --- ! 3 |
| ! ! ! (8060KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 095 ! SPEED SENSOR N2 ! 42 ! SPEED SNSR2 ! --- ! 3 |
| ! SHORTED ! ! (8060KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 096 ! LC SURGE ! 5 ! BLEED CTL VLV ! --- ! 1 |
| ! ! ! (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 097 ! LC SURGE AND BCV ! 5 ! BLEED CTL VLV ! SURGE/REVERSE ! 1 |
| ! ! ! (8051KM) ! FLOW ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 098 ! OVERTEMPERATURE ! 28 ! IGV ACTR ! OVERTEMPERA- ! 1 |
| ! ! ! (8014KM) ! TURE ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 098 ! OVERTEMPERATURE ! 15 ! EGT TC1 ! OVERTEMPERA- ! 1 |
| ! ! ! (8057KM1) ! TURE ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 098 ! OVERTEMPERATURE ! 18 ! EGT TC2 ! OVERTEMPERA- ! 1 |
| ! ! ! (8057KM2) ! TURE ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 098 ! OVERTEMPERATURE ! 21 ! FUEL CTL UNIT ! OVERTEMPERA- ! 1 |
| ! ! ! (8022KM) ! TURE ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 099 ! MAIN FUEL VALVE STUCK ! 21 ! FUEL CTL UNIT ! APU FUEL ! 1 |
| ! OPEN ! ! (8022KM) ! VALVE FAILED ! |
| ! ! ! ! OPEN ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 100 ! SPEED N1 INJECTION ! 14 ! ECB (59KD) ! --- ! 2 |
| ! TEST FAILURE ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 101 ! SPEED N2 INJECTION ! 14 ! ECB (59KD) ! --- ! 2 |
| ! TEST FAILURE ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 102 ! BOTH THERMOCOUPLES ! 16 ! EGT TC1 ! SENSOR FAILURE! 1 |
| ! FAILED ! ! (8057KM1) AND ! ! |
| ! ! ! EGT TC2 ! ! |
| ! ! ! (8057KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 103 ! LCD DELTE P SENSOR ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! FAIL ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 104 ! RAM FAIL ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 105 ! PROCESSOR FAIL ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 106 ! NO ECS DATA ! 34 ! NO DATA FROM ECS! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 107 ! ARINC FAULT TX/R FLAG ! 14 ! ECB (59KD) ! --- ! 2 |
| ! STUCK LOW ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 108 ! A/D CONVERSION TIME ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ! TOO LONG ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 109 ! A/D 5V REFERENCE HI ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 110 ! A/D 5V REFERENCE LO ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 111 ! A/D GROUND INPUT HI ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 112 ! FUEL FLOW PRESSURE ! 31 ! FUEL LOW PRESS/ ! --- ! 2 |
| ! ! ! LOW PRESS SW ! ! |
| ! ! ! (5030QM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 113 ! TRUE EMERGENCY STOP ! -- ! --- ! EMERGENCY STOP! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 114 ! BACKUP OVERSPEED ! 53 ! COOLING FAN PMG ! SENSOR FAILURE! 1 |
| ! CIRCUIT FAILURE 50% ! ! ASSY (8055KM) ! ! |
| ! SPEED CHECK ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 115 ! BACKUP OVERSPEED ! 14 ! ECB (59KD) ! BACKUP ! 1 |
| ! ! ! ! OVERSPEED ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 115 ! BACKUP OVERSPEED ! 44 ! SPD SNSR1 ! BACKUP ! 1 |
| ! ! ! (8060KM1) AND ! OVERSPEED ! |
| ! ! ! SPD SNSR2 ! ! |
| ! ! ! (8060KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 115 ! BACKUP OVERSPEED ! 21 ! FUEL CTL UNIT ! BACKUP ! 1 |
| ! ! ! (8022KM) ! OVERSPEED ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 115 ! BACKUP OVERSPEED ! 53 ! COOLING FAN PMG ! BACKUP ! 1 |
| ! ! ! ASSY (8055KM) ! OVERSPEED ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 116 ! B/U OVERSPEED CIRCUIT ! 14 ! ECB (59KD) ! BACKUP ! 1 |
| ! FAILURE DURING ! ! ! OVERSPEED ! |
| ! POWER-UP ! ! ! CIRCUIT ! |
| ! ! ! ! FAILURE ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 117 ! FUEL SERVO OPEN ! 14 ! ECB (59KD) ! --- ! 1 |
| ! INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 118 ! IGV ACTUATOR ! 70 ! CHECK APU FUEL ! --- ! 1 |
| ! MECHANICALLY FAILED ! ! SUPPLY ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 118 ! IGV ACTUATOR ! 28 ! IGV ACTR ! --- ! 1 |
| ! MECHANICALLY FAILED ! ! (8014KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 119 ! BCV MECHANICALLY ! 70 ! CHECK APU FUEL ! --- ! 1 |
| ! FAILED ! ! SUPPLY ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 119 ! BCV MECHANICALLY ! 5 ! BLEED CTL VLV ! --- ! 1 |
| ! FAILED ! ! (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 120 ! FLAP ACTUATOR NOT ! 2 ! INLET FLAP ACTR ! --- ! 2 |
| ! CLOSED ! ! (4015KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 121 ! FLAP ACTUATOR NOT ! 2 ! INLET FLAP ACTR ! AIR INTAKE ! 1 |
| ! OPEN ! ! (4015KM) ! NOT OPEN ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 122 ! GEN AND GBX RTD'S ! 50 ! OIL TEMP SNSR ! SENSOR FAILURE! 1 |
| ! FAILED ! ! (8084KM) AND ! ! |
| ! ! ! GENERATOR (8XS) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 123 ! 10 VOLT EXCITATION ! 8 ! ECB (59KD)/APU ! --- ! 1 |
| ! VOLTAGE FAILED ! ! HARNESS (8001KM)! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 124 ! A/C PIN I.D. MISMATCH ! 47 ! WRG: ACFT TYPE ! --- ! 3 |
| ! ! ! PIN/ECB (59KD) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 125 ! FAULT OUTPUT SHORTED ! 4 ! WRG: ECB PIN ! --- ! 3 |
| ! ! ! AB-H5 ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 126 ! B/U START CONTACTOR ! 51 ! CURRENT LIMITER ! --- ! 1 |
| ! FAILED OPEN ! ! (6KA)/CONTACTOR ! ! |
| ! ! ! (10KA) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 127 ! B/U START CONTACTOR ! 10 ! CONTACTOR (10KA)! --- ! 3 |
| ! FAILED CLOSED ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 128 ! MAIN START CONTACTOR ! 59 ! CONTACTOR (5KA) ! --- ! 1 |
| ! FAILED OPEN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 129 ! MAIN START CONTACTOR ! 59 ! CONTACTOR (5KA) ! --- ! 3 |
| ! FAILED CLOSED ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 130 ! ALL ENGINE ID ! 39 ! SERIAL NUMBER ! --- ! 3 |
| ! RESISTORS OPEN ! ! ENCODER (8061KM)! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 131 ! NOT USED ! -- ! --- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 132 ! BOTH SPEED INJECTION ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ! TEST FAILURE ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 133 ! APU FUEL LOW PRESS ! 54 ! FIRE EMERG STOP ! --- ! 3 |
| ! VALVE OPEN ! ! RELAY (6WF) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 134 ! APU FUEL LOW PRESS ! 54 ! FIRE EMERG STOP ! --- ! 3 |
| ! VALVE SHORTED ! ! RELAY (6WF) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 135 ! APU FUEL LOW PRESS ! 14 ! ECB (59KD) ! --- ! 3 |
| ! VALVE INTERNAL ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 136 ! TEST EMERGENCY STOP ! -- ! --- ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 137 ! NOT USED ! -- ! --- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 138 ! BCV LVDT FAIL DURING ! 5 ! BLEED CTL VLV ! --- ! 1 |
| ! COMPENSATION ! ! (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 139 ! IGV LVDT FAIL DURING ! 28 ! IGV ACTR ! --- ! 1 |
| ! COMPENSATION ! ! (8014KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 140 ! ILLOGICAL OIL PRESSURE! 55 ! OIL PRS SW ! SENSOR FAILURE! 1 |
| ! SW INPUT & OIL LEVEL ! ! (8091KM) AND OIL! ! |
| ! RTD OPEN OR SHORT ! ! LVL SNSR ! ! |
| ! ! ! (8089KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 141 ! ILLOGICAL OIL PRESSURE! 56 ! OIL PRESS SW ! SENSOR FAILURE! 1 |
| ! SW INPUT & LOW OIL ! ! (8091KM) AND ! ! |
| ! LEVEL ! ! LOW OIL LEVEL ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 142 ! BOTH SPEEDS HIGH ! 14 ! ECB (59KD) ! LOSS OF SPEED ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 143 ! OSCILLATING LC SURGE ! 5 ! BLEED CTL VLV ! SURGE/REVERSE ! 1 |
| ! AND BLEED VLV.FAILED ! ! (8051KM) ! FLOW ! |
| ! OPEN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 144 ! BACKUP OVERSPEED ! 53 ! COOLING FAN PMG ! SENSOR FAILURE! 1 |
| ! CIRCUIT FAILURE -60% ! ! ASSY (8055KM) ! ! |
| ! SPEED CHECK ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 145 ! SPD SENSOR N1 FAIL & ! 41 ! SPD SNSR1 ! LOSS OF SPEED ! 1 |
| ! ECB SPEED N2 FLT ! ! (8060KM1) AND ! ! |
| ! ! ! ECB (59KD) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 146 ! SPD SENSOR N2 FAIL & ! 43 ! SPD SNSR2 ! LOSS OF SPEED ! 1 |
| ! ECB SPEED N1 FLT ! ! (8060KM2) AND ! ! |
| ! ! ! ECB (59KD) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 147 ! NOT USED ! -- ! --- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 148 ! NOT USED ! -- ! --- ! --- ! - |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 149 ! LCD DELTA P SENSOR ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! FAILED LOW ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 150 ! NULL TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 151 ! DISPATH COMMAND ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ! OVERRUN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 152 ! CFDS OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 153 ! LOW PR TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 154 ! SLOW TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 155 ! MED TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 156 ! MED TASK3 OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 157 ! ONE HZ TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 158 ! ROM CALC TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 159 ! POWER UP TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 160 ! MIT TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 161 ! RAM INT TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 162 ! ROOT TASK OVERRUN ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 163 ! DIVIDE BY ZERO ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ! INTERRUPT ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 164 ! FAULTY INTERRUPT ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 165 ! ECS INT FREQ FLT ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 166 ! CFDS INT FREQ FLT ! 14 ! ECB (59KD) ! --- ! 3 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 167 ! STACK RETURN FAULT ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 168 ! MAIN FUEL VALVE ! 14 ! ECB (59KD) ! APU FUEL VALVE! 1 |
| ! INTERNAL DURING WATCH ! ! ! FAILED OPEN ! |
| ! OR SHUTDOWN ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 169 ! OSCILLATING LC SURGE ! 48 ! BLD FLOW XDCR ! --- ! 1 |
| ! ! ! (8039KM)/BLD CTL! ! |
| ! ! ! VLV (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 170 ! PRESSURE MISMATCH ! 29 ! INLET T-P SNSR ! --- ! 1 |
| ! FAULT ! ! (8013KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 170 ! PRESSURE MISMATCH ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! FAULT ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 171 ! DELPQP LIMIT EXCEEDED ! 13 ! BLD FLOW XDCR ! --- ! 1 |
| ! ! ! (8039KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 172 ! BCV MECHANICALLY ! 5 ! BLEED CTL VLV ! --- ! 1 |
| ! FAILED OPEN ! ! (8051KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 173 ! TASK CONTROL DATA ! 14 ! ECB (59KD) ! ECB FAILURE ! 1 |
| ! FAULT ! ! ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 174 ! BCV LVDT FAIL DURING ! 69 ! BLEED CTL VLV ! --- ! 1 |
| ! MAX COMPENSATION ! ! (8051KM)/FUEL ! ! |
| ! ! ! CTL UNIT ! ! |
| ! ! ! (8022KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 175 ! OVERTEMPERATURE ! 28 ! IGV ACTR ! ! 1 |
| ! DELAY ISOLATE ! ! (8014KM) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 175 ! OVERTEMPERATURE ! 15 ! EGT TC1 ! --- ! 1 |
| ! DELAY ISOLATE ! ! (8057KM1) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 175 ! OVERTEMPERATURE ! 18 ! EGT TC2 ! --- ! 1 |
| ! DELAY ISOLATE ! ! (8057KM2) ! ! |
| ----+-----------------------+--------+-----------------+---------------+------- |
| 175 ! OVERTEMPERATURE ! 21 ! FUEL CTL UNIT ! --- ! 1 |
| ! DELAY ISOLATE ! ! (8022KM) ! ! |
| ------------------------------------------------------------------------------- |
8. Display
** ON A/C NOT FOR ALL 9. -
The MCDU shows the APU information in normal mode and menu mode through the CFDS.
The MCDU shows the APU information in normal mode and menu mode through the CFDS.
A. Normal Mode
During a normal mode the ECB continuously transmits all class 1 and 2 faults and messages to the CFDS. The MCDU display shows the faults and messages when the 'LAST LEG REPORT' is set. The Centralized Fault Display Interface Unit (CFDIU) makes the display on the MCDU in a normal mode.
During a normal mode the ECB continuously transmits all class 1 and 2 faults and messages to the CFDS. The MCDU display shows the faults and messages when the 'LAST LEG REPORT' is set. The Centralized Fault Display Interface Unit (CFDIU) makes the display on the MCDU in a normal mode.
B. Menu Mode
The menu mode is available on the MCDU display when the 'SYSTEM REPORT TEST' is set and an 'APU' selection is made. The MCDU display shows the related APU system data and the faults when a selection of the APU menu is made. The ECB makes the display on the MCDU in a menu mode. The APU menu includes the:
The menu mode is available on the MCDU display when the 'SYSTEM REPORT TEST' is set and an 'APU' selection is made. The MCDU display shows the related APU system data and the faults when a selection of the APU menu is made. The ECB makes the display on the MCDU in a menu mode. The APU menu includes the:
- LAST LEG REPORT,
- PREVIOUS LEG REPORT,
- LRU IDENTIFICATION,
- SYSTEM SELF TEST,
- SHUT DOWNS,
- APU DATA/OIL,
- CLASS 3 FAULTS,
- FAULT CONDITIONS
(1) <LAST LEG REPORT>
This gives the LRU failures (class 1 and 2) during the last flight leg, related to the system selection.
This gives the LRU failures (class 1 and 2) during the last flight leg, related to the system selection.
(2) <PREVIOUS LEG REPORT>
This gives the LRU failures (class 1 and 2) for the previous flight legs, a maximum of 30 failures of each class.
This gives the LRU failures (class 1 and 2) for the previous flight legs, a maximum of 30 failures of each class.
(3) <LRU IDENTIFICATION>
This gives the part number of the ECB only.
This gives the part number of the ECB only.
(4) <SYSTEM SELF TEST>
This will start a self test and will show any LRU failures (not related to class of fault).
This will start a self test and will show any LRU failures (not related to class of fault).
(5) <SHUTDOWNS>
This gives the cause of the shutdown and the related class 1 LRUs. A list of the shutdown faults and texts of the possible causes is shown in tables 2, 3 and 5.
This gives the cause of the shutdown and the related class 1 LRUs. A list of the shutdown faults and texts of the possible causes is shown in tables 2, 3 and 5.
(6) <APU DATA/OIL>
This gives the APU serial number, operation hours, cycles and the oil level.
This gives the APU serial number, operation hours, cycles and the oil level.
(7) <CLASS 3 FAULTS>
This gives every class 3 fault that has occurred, see table 6. The MCDU display format changes. The change is related to the mode selection that is made. The text of the LRU failures is related to which LRU has failed. A sample of the LRU failures is given in tables 2, 3, 4 and 6. A flight 'LEG' is specified as from initial power up, through flight, to power off after the aircraft has landed.
This gives every class 3 fault that has occurred, see table 6. The MCDU display format changes. The change is related to the mode selection that is made. The text of the LRU failures is related to which LRU has failed. A sample of the LRU failures is given in tables 2, 3, 4 and 6. A flight 'LEG' is specified as from initial power up, through flight, to power off after the aircraft has landed.
(8) <FAULT CONDITIONS>
This screen is only accessible by the prompt from the screens that follow:
This screen is only accessible by the prompt from the screens that follow:
- <SHUTDOWNS>
- <SYSTEM SELF-TEST>
- <LAST LEG REPORT>
- <PREVIOUS LEGS REPORT>
- <CLASS 3 FAULTS>.
(a) FAULT CONDITIONS Page 1
Page 1 of the FAULT CONDITION screen gives the data that follows:
Page 1 of the FAULT CONDITION screen gives the data that follows:
- APU serial number (S/N);
- Date the fault occured
- GMT when the fault occured;
- Fault Message
- Selected APU speed (NA) in %;
- EGT1 in deg.C;
- EGT2 in deg.C;
- Inlet Pressure (PA2) in m.Bar;
- Inlet Temperature (LCIT) in deg.C;
- A/C Flight Phase (ACFP);
- Fault Code Number (FCN);
- LRU ID Number;
- APU Operating State (OPST).
(b) FAULT CONDITIONS Page 2
Page 2 of the FAULT CONDITION screen gives the data that follows:
Page 2 of the FAULT CONDITION screen gives the data that follows:
- APU serial number (S/N);
- Date the fault occured
- GMT when the fault occured;
- Fault Message
- Fuel Servo Command (FSC) in mA;
- BCV Position in %;
- IGV Position in deg;
- LCD Total Pressure (PT) in bar;
- LCD Detlta Pressure (DPA) in psid;
- ECS Demand (ECSD) in %;
- Gearbox Oil Temperature (OTA) in deg.C;
- Generator Oil Temperature (GOT) in deg.C;
- State of Low Fuel Pressure Switch (LFP) yes/no state.
10. AIDS
The Aircraft Integrated Data System (AIDS) which contains two programmed reports connects with the APU system. The two programmed reports are:
The Aircraft Integrated Data System (AIDS) which contains two programmed reports connects with the APU system. The two programmed reports are:
- Main Engine Start (MES) IDLE,
- SHUTDOWN.
A. MES/IDLE Report
The Main Engine Start (MES)/IDLE report is supplied after every fiftieth MES and it is used to monitor APU performance. The report includes:
The Main Engine Start (MES)/IDLE report is supplied after every fiftieth MES and it is used to monitor APU performance. The report includes:
- the data from both Main Engine Starts (MES),
- the idle mode that follows (until the APU is shutdown),
- the data from the last APU start, which includes the APU operation hours and the start cycles.
B. SHUTDOWN Report
The SHUTDOWN report is supplied after every APU abnormal shutdown occurs and is used for trouble shooting. The printer 4TW of the MCDUs prints out both the reports and ground software analyzes the reports. This information includes the APU operation hours and the start cycles.
The SHUTDOWN report is supplied after every APU abnormal shutdown occurs and is used for trouble shooting. The printer 4TW of the MCDUs prints out both the reports and ground software analyzes the reports. This information includes the APU operation hours and the start cycles.
11. BITE Test
A. Power-up Test
The Power-up test is a major test, which is performed every time when the ECB enters the POWER UP state. The test includes the following features:
The Power-up test is a major test, which is performed every time when the ECB enters the POWER UP state. The test includes the following features:
- test of the watchdog timer circuit,
- test of the On-Board Replaceable Module (OBRM) of the ECB,
- test ECB-Read Only Memory (ROM),
- test of the ECB-RAM,
- test of the integrity of the primary and backup overspeed circuirity (speed injection test),
- test of the discrete and analog outputs,
- oil level test.
(1) Watchdog timer test
The ECB is equipped with a watchdog, ensuring the correct function of the Central Processing Unit (CPU) of the ECB.
In case the timer circuit of the watchdog is not reset within 32msec after power-up, a system reset is created and the ECB is disabled.
For each occurence of a watchdog time out, the fault output of the ECB is activated. A reactivation and restart is possible by cycling the APU-MASTER switch in the cockpit.
Three occurrences of a watchdog time out, results in a hardware latch-up of the ECB and requires a cycling of power to reset the ECB.
The ECB is equipped with a watchdog, ensuring the correct function of the Central Processing Unit (CPU) of the ECB.
In case the timer circuit of the watchdog is not reset within 32msec after power-up, a system reset is created and the ECB is disabled.
For each occurence of a watchdog time out, the fault output of the ECB is activated. A reactivation and restart is possible by cycling the APU-MASTER switch in the cockpit.
Three occurrences of a watchdog time out, results in a hardware latch-up of the ECB and requires a cycling of power to reset the ECB.
(2) Test of the OBRM
The ECB test the installed OBRM and ensures that the correct OBRM is installed. In case a proper OBRM is not installed on the ECB the fault output is activated.
The ECB test the installed OBRM and ensures that the correct OBRM is installed. In case a proper OBRM is not installed on the ECB the fault output is activated.
(3) ROM checksum evaluation
The data, stored in the ECB-ROM in binary form, corresponds to a determined checksum. If the sum, evaluated during power-up, is not equal to the checksum a failure of the ROM (ECB) is declared.
The data, stored in the ECB-ROM in binary form, corresponds to a determined checksum. If the sum, evaluated during power-up, is not equal to the checksum a failure of the ROM (ECB) is declared.
(4) RAM read/write test
Every RAM location is tested in the write and read mode, with every bit high and low and with a pattern of alternating high and low bits.
Every RAM location is tested in the write and read mode, with every bit high and low and with a pattern of alternating high and low bits.
(5) Speed injection test
The ECB tests the integrity of the primary and backup overspeed circuirity by stimulating the overspeed circuits with a known frequency (speed). If the measured value is not equal to the reference value a fault is detected.
The ECB tests the integrity of the primary and backup overspeed circuirity by stimulating the overspeed circuits with a known frequency (speed). If the measured value is not equal to the reference value a fault is detected.
(6) Test of discretes and analog outputs
The ECB energizes the fuel solenoid valve and the gearbox de-oiling valve for approx. 10msecs to determine if the outputs are open circuit or short circuit.
The ECB energizes the fuel solenoid valve and the gearbox de-oiling valve for approx. 10msecs to determine if the outputs are open circuit or short circuit.
(7) Oil level test
The oil level test is performed using the oil temperature, evaluated by a Resistance Temperatur Device (RTD), and two reference voltages. The reference voltages are the output voltage of the RTD measured at the beginning of the test (55msecs) and the output voltage of the RTD after an energized period of 8 seconds. The oil temperature in conjunction with the delta of the two reference voltages gives a conclusion of the oil level.
The oil level test is performed using the oil temperature, evaluated by a Resistance Temperatur Device (RTD), and two reference voltages. The reference voltages are the output voltage of the RTD measured at the beginning of the test (55msecs) and the output voltage of the RTD after an energized period of 8 seconds. The oil temperature in conjunction with the delta of the two reference voltages gives a conclusion of the oil level.
NOTE: The oil level test is only performed when the A/C is on ground and the air-intake flap is fully closed.
B. Manually Initiated Test
It is possible to initiate a self test of the ECB via the CFDS. This self test is only released during the WATCH state while the speed is less than 7%. The self test conducts the following checks:
It is possible to initiate a self test of the ECB via the CFDS. This self test is only released during the WATCH state while the speed is less than 7%. The self test conducts the following checks:
- oil level (regardless of air intake flap position),
- speed circuits,
- engine ID,
- discrete outputs,
- ROM test,
- output test.
C. Linear Voltage Differential Tranducer (LVDT) compensation
At 95% speed and prior to activation of the EGT and surge control loops, the ECB reads the position (voltage) of the actuators of the Inlet Guide Vanes (IGV) and of the Bleed Control Valve (BCV), which corresponds to the 0% position demand. These values are used to compute the 100% position (voltage) and automatically compensates for the LVDT circuirity errors.
At 95% speed and prior to activation of the EGT and surge control loops, the ECB reads the position (voltage) of the actuators of the Inlet Guide Vanes (IGV) and of the Bleed Control Valve (BCV), which corresponds to the 0% position demand. These values are used to compute the 100% position (voltage) and automatically compensates for the LVDT circuirity errors.
D. Fault Detection
A list fault symtoms that can occur is shown in Table 1 of Para. 7. The fault symptoms are classified as operational faults, or as Line Replaceable Unit (LRU) faults. The severity levels for the fault symptoms are also defined in Para. 7.
All detected faults can be cleared and a re-start of the APU is possible by cycling the APU-MASTER switch, with the following exceptions:
A list fault symtoms that can occur is shown in Table 1 of Para. 7. The fault symptoms are classified as operational faults, or as Line Replaceable Unit (LRU) faults. The severity levels for the fault symptoms are also defined in Para. 7.
All detected faults can be cleared and a re-start of the APU is possible by cycling the APU-MASTER switch, with the following exceptions:
- no clearance by APU-MASTER switch cycling but APU re-start is possible
. low oil level
. speed injector test faild (one primary channel). - no clearance by APU MASTER switch cycling and no APU re-start is possible:
. back up speed injection test fails,
. watch dog circuirity failure,
. speed injection test (both primary channels).