W DOC AIRBUS | AMM A320F

Ignition Test (Menu Mode) [CFML]

TASK 74-00-00-710-803-A
Ignition Test (Menu Mode)

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
ZONE: 400
1. Reason for the Job
The ignition test will power the local and cross channel igniters for ten seconds each with ten seconds in between. The purpose of the test is to provide an aural feedback of correct ignition system operation and display any faults during the test.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-012-A
Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 71-00-00-700-805-A
Dry-Motoring Check
F Ignition Test
F Function Terminated
3. Job Set-up
Subtask 74-00-00-941-057-A
A. Do the dry monitoring check to dry any remaining fuel that could have collected in the combustion chamber (Ref. AMM TASK 71-00-00-700-805).
Subtask 74-00-00-861-059-A
B. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 74-00-00-941-054-A
C. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch is in the OFF position for more than five minutes before you do this procedure.
     (c) Put WARNING NOTICE(S) in position to tell persons not to operate:
  • The ENG/MODE selector switch, and
  • The ENG/MASTER 1(2) control switch.
   (2) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 74-00-00-865-065-A
D. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUL/G/LGCIU/SYS1/NORM1GAC09
121VUHYDRAULIC/LGCIU/SYS22GAQ35
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
121VUENGINE/IGN/ENG1/SYS B3JH1P41
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R40
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/ENG2/FADEC B/AND EIU24KS2R41
Subtask 74-00-00-860-066-A
E. Aircraft Maintenance Configuration
   (1) On the ENG section of the maintenance panel 50VU:
  • Release the FADEC GND PWR 1(2) pushbutton switch (the ON legend comes on).
NOTE: After the FADEC is energized, wait ten seconds before you start the test. If you do not wait ten seconds, the interactive mode stops the EEC self-test and this can cause unwanted faults.
   (2) On the left or right Multipurpose Control and Display Unit (MCDU), get the SYSTEM REPORT/TEST/ENG page (Ref. AMM TASK 31-32-00-860-012).
4. Procedure
Subtask 74-00-00-750-050-A
WARNING: BEFORE YOU PUSH THE MAN START PUSHBUTTON SWITCH, MAKE SURE THAT, ON THE ECAM DISPLAY UNIT, THE PRESSURE AT THE STARTER VALVE INLET IS ZERO PSI. IF THE PRESSURE IS NOT ZERO PSI, THE ENGINE CAN ROTATE AND CAUSE INJURY.
A. The Ignition Test (Menu Mode)
NOTE: The ignition test is expected to take approximately four minutes to complete.
NOTE: During the test, obey the instructions shown on the MCDU.
NOTE: The EEC will not enter the menu mode (interactive mode) after an enquire command from the CFDS (Centralized Fault Display System) when any of the following conditions are set:
  • N2 more than ten percent or invalid.
  • Engine not off.
  • Engine not in default start state.
  • TLA (Throttle Lever Angle) not at idle or invalid.
  • Aircraft in the air.
  • MASTER lever ON or invalid.
  • BITE command code input label invalid.
NOTE: The EEC will abort the Ignition Test function and display the FUNCTION TERMINATED screen when any of the following conditions occur:
F Function Terminated
  • N2 is greater than 10 percent or invalid.
  • Engine not in default start state.
  • TLA ( Throttle Level Angle) not at idle state .
  • You enter in the interactive mode of the other channel.
  • RETURN key is selected while the test is running.
NOTE: Ignition Test will be terminated without displaying a termination screen if any of the following conditions occur:
  • The RETURN key is selected on the main menu screen.
  • Channel in Menu Mode is not the active channel.
  • Invalid BITE command or Invalid equipment code received by EEC.
  • A LOGOFF condition received by EEC.
  • Engine start detected whereas function requiring idle speed (as Idle Test, Vibration Ground Run) is not active.
  • Selected Mach more than 0.12 or invalid.
  • Aircraft indicates in air.
ACTION
RESULT
1.Initialize Menu Mode on the applicable engine and EEC, by selecting FADEC XY (X=Eng position, Y=channel number)
The ENGINE X MAIN MENU is shown.
2.On the MCDU Engine Test Main Screen:
  • Push the key adjacent to the IGNITION TEST
IGNITION TEST start screen will be displayed.
3.On ENG panel 115VU, make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is to NORM.

4.On ENG panel 115VU, set the ENG MASTER control switch is in the ON position.

5.On the MCDU IGNITION TEST start screen:
  • Select PUSHBUTTON TO START THE TEST
NOTE: Listen for snapping of igniter A.
The EEC will do the following for ten plus or minus one seconds:
  • Demand igniter A command for ten seconds.
  • Display the IGNITION TEST active screen on the MCDU.
6.The MCDU IGNITION TEST ACTIVE screen displays:
TEST IN PROGRESS SPARKING IGNITER
  • PRESS RETURN TO ABORT

7.The MCDU IGNITION TEST active screen displays:
DID YOU HEAR THE IGNITER SPARK:
  • Select YES or NO button.
NOTE: Listen for snapping of igniter B.
If YES is selected the EEC will:
  • Clear the Menu Mode Ignition Fault Flag for igniter A.
  • Demand igniter B command for ten seconds.
  • Display the IGNITION TEST active screen on the MCDU.
If NO is selected the EEC will:
  • Set the Menu Mode Ignition Fault Flag for igniter A.
  • This failure will be reported at the end of the test.
  • Demand igniter B command for ten seconds.
  • Display the IGNITION TEST active screen on the MCDU.
8.The MCDU IGNITION TEST active screen displays
DID YOU HEAR THE IGNITER SPARK:
  • Select YES or NO button.
The MCDU screen displays: PROCESSING RESULTS PLEASE WAIT.
NOTE: Wait ten seconds (plus or minus one second)
If YES is selected:
  • TEST OK will be displayed on the MCDU if there are no faults,

    or

  • FAULT REPORT page will be displayed on the MCDU containing the engine number, channel letter, flight let number (00), date, time, ATA number and description of the fault.
    If NO is selected, the EEC will:
  • Set the Menu Mode Ignition Fault Flag for igniter B.
  • FAULT REPORT page will be displayed on the MCDU containing the engine number, channel letter, flight leg number (00), date, time, ATA number and description of the fault.
9.On the MCDU IGNITION TEST active screen:
  • Select RETURN.
  • As requested, on ENG panel 115VU, set the ENG MASTER control switch is in the OFF position.
TEST COMPLETE will be shown on the MCDU.
10.On the MCDU IGNITION TEST active screen:
  • Select RETURN again.
The Engine Test Main Screen will be shown.
11.Do the same procedure for the other EEC channel.
Both EEC channels are tested.
12.On ENG panel 115VU, make sure that the ENG MASTER control switch is in the OFF position.

13.On the MCDU Engine Test Main Screen:
  • Select RETURN.
The MCDU Home page comes into view.
5. Close-up
Subtask 74-00-00-860-065-A
A. Put the aircraft back to its initial configuration.
   (1) On the ENG section of the maintenance panel 50VU:
  • Push the FADEC GND PWR 1(2) pushbutton switch (the ON legend goes off).
Subtask 74-00-00-862-059-A
B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 12:58:18 UTC
"Aviabrain" 2025