Idle Test (Menu Mode) [CFML]

TASK 73-29-00-740-803-A
Idle 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.

WARNING: MAKE SURE THAT ALL ENGINE OPERATING AREAS ARE AS CLEAN AS POSSIBLE. ALL RAMPS, TAXIWAYS, RUNWAYS AND OTHER OPERATING AREAS MUST BE VERY CLEAN TO PREVENT BAD DAMAGE TO THE ENGINE, AIRCRAFT AND PERSONS IN THE AREA.

WARNING: MAKE SURE THAT THE LANDING GEAR GROUND SAFETIES AND THE WHEEL CHOCKS ARE IN POSITION. MOVEMENT OF THE AIRCRAFT CAN BE DANGEROUS.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT FOR THE ENGINE GROUND-RUN TEST :

THE AIRCRAFT IS IN A CLEAR AREA SPECIFIED FOR ENGINE GROUND RUN AND WHICH AGREES WITH THE ENGINE DANGER AREAS GIVEN IN THE CFM LEAP-1A ENGINE SAFETY PRECAUTIONS REF. AMM 71-00-00-869-803.
THE AIRCRAFT IS STOPPED AND CANNOT MOVE DURING THE ENGINE GROUND RUN.

IF DURING THE ENGINE GROUND-RUN TEST THE AIRCRAFT STARTS TO MOVE FORWARD :

DECREASE THE ENGINE THRUST IMMEDIATELY
STOP THE AIRCRAFT WITH THE PARKING BRAKE.

WARNING: DO NOT TOUCH THE PROBES DURING OR IMMEDIATELY AFTER THIS PROCEDURE. THE PROBES WILL BE HOT AND CAN BURN YOU.

CAUTION: DO NOT REPLACE AN IDLE LEAK CHECK BY A MOTORING TEST. YOU CANNOT DETECT POTENTIAL OIL LEAKS WITH A MOTORING TEST. IF YOU DO A MOTORING TEST INSTEAD OF AN IDLE LEAK CHECK, YOU CAN CAUSE AN ENGINE SHUTDOWN.

CAUTION: MAKE SURE THAT THERE IS NO HYDRAULIC GROUND POWER SUPPLY CONNECTED TO THE AIRCRAFT WHEN YOU DO THIS PROCEDURE. IF A HYDRAULIC GROUND POWER SUPPLY IS CONNECTED, THERE IS A RISK OF DAMAGE TO THE ENGINE PUMPS.

CAUTION: DO NOT ENTER A FLIGHT NUMBER IN THE CFDIU. IF YOU DO, THE MENU MODE WILL STOP WHEN YOU START THE OTHER ENGINE.

CAUTION: - SEE THE APPLICABLE FIGURE FOR WIND LIMIT RESTRICTIONS WHEN THE ENGINE OPERATES.

NATURAL WINDS AND IRREGULAR FORCES FROM SUDDEN GUSTS INCREASE THE DANGEROUS AREA.
DO NOT GO ABOVE OPEN COWLING LIMITATIONS WHEN YOU DO THE TESTS.
THE OPERATOR MUST FULLY KNOW ALL THE OPERATING LIMITS AND PROCEDURES BEFORE THE ENGINE OPERATES.

CAUTION: OPERATION AT MINIMUM IDLE IN ICING CONDITIONS IS PERMITTED FOR EXTENDED PERIODS. IF THE CONDITION CONTINUES FOR MORE THAN 30 MINUTES , OR IF IMPORTANT ENGINE VIBRATION OCCURS; YOU MUST INCREASE THE ENGINE SPEED TO 70 PERCENT N1 MINIMUM FOR APPROXIMATELY 15 SECONDS BEFORE YOU SELECT A HIGHER THRUST OPERATION.

ZONE: 400

1. Reason for the Job
This procedure is mainly used for Troubleshooting or test after installation of specific LRUs. It may also be used to do necessary idle leak checks after maintenance. The engine idle test will slew the electro-hydraulically controlled actuators that are inhibited sub-idle fully open and fully closed while the engine is at idle. Upon completion of the test, the test results screen is displayed on the Multipurpose Control and Display Unit (MCDU) showing any faults detected during the test. The valves tested are the High Pressure Turbine Active Clearance Control (HPTACC) valve, the Low Pressure Turbine Active Clearance Control (LPTACC) valve, the Modulated Turbine Cooling (MTC) valve and the Nacelle Anti Ice (NAI) valves.

NOTE: The Idle test procedure does not provide enough pressure in the ducts to detect a NAI failed open case if the FADEC software version is FCS3.1. Thus it shall not be used as a Confirmation Method for NAI Failed Open fault (FC 2450, 2452, 2462) or as an Operational test for AMM tasks of NAIV installation (30-21-51-400-804) or NAIV reactivation (30-21-00-440-805) if FADEC version is FCS3.1.
Instead, use the procedure Alternative Operational Test for the Trouble Shooting NAI Valve Failed provided in task 30-21-00-710-802.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
98F10103500000	2	CHOCK-MLG,ENGINE RUN-UP

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-805-A	Check of the Oil Level and Replenishing
TASK 12-31-71-660-803-A	Cold Weather Maintenance - Power Plant
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 26-12-00-710-001-A	Operational Check of Loop/Squib
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 36-12-00-860-805-A	Pressurization of the Bleed System with the APU
TASK 36-12-00-860-806-A	Pressurization of the Bleed System through the HP Ground Connector
TASK 71-00-00-710-815-A	Idle Leak Check
TASK 71-00-00-790-805-A	Fuel or Hydraulic or Oil Leakage Limits
TASK 71-00-00-860-827-A	Start the Engine (Normal Automatic Start)
TASK 71-00-00-860-829-A	Engine Shutdown
TASK 71-00-00-869-802-A	Wind Limitations During Engine Ground Operations
TASK 71-00-00-869-803-A	Safety Precautions During Engine Ground Operations
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 71-60-41-210-801-A	General Visual Inspection of the Air Intake Cowl (MPD)
TASK 72-59-00-210-801-A	Visual Inspection of the Turbine Rear Frame Module
TASK 78-30-00-040-807-A	Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A	Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
Tool Installation
Engine Idle Test Screen

3. Job Set-up
Subtask 73-29-00-869-064-A

A. Preparation for Test
(1) Obey the wind limitations and safety precautions during engine ground operations (Ref. AMM TASK 71-00-00-869-802) and (Ref. AMM TASK 71-00-00-869-803).
(2) Put the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP in position in front of each forward outboard MLG wheel.

Tool Installation

NOTE: If engine start is followed by a high power run, use 98F10103500000 CHOCK-MLG,ENGINE RUN-UP.

(3) Make sure that the engine inlet and exhaust covers are removed. Make sure that these areas are clear of unwanted objects.
(4) Make a visual check of the temperature sensors, fan inlet, and exhaust areas. If snow or ice has collected in the fan duct, make sure that the fan turns freely. Also, make sure that the engine inlet, inlet lip, fan, spinner, and fan exhaust duct are clear of ice or snow. If the fan does not turn freely, melt the ice or snow with hot air before an engine operation.
(5) If it is necessary, deice or anti-ice the fan blades. Refer to task Engine Start In Cold Weather Conditions (Ref. AMM TASK 12-31-71-660-803).
(6) Look at the general condition of the fan spinner and fan blades, core exhaust nozzle, LPT and external surfaces of the cowls.
(7) Make a check of the drain ports for fuel, oil and hydraulic leaks (Ref. AMM TASK 71-00-00-790-805). Also make sure that fuel drained from the engine does not cause a fire.

NOTE: In case of extreme cold weather condition (OAT < -20 deg.C), fuel leaks from the drain may occur and should not be considered as abnormal. Therefore, check for fuel leaks at the drain mast shall be performed with the engine fully stabilized at idle.

(8) Remove covers from TAT, AOA, and PITOT probes.

Subtask 73-29-00-869-065-A

B. Retraction of the Flaps and the Slats

CAUTION: MAKE SURE THAT THE FLAPS AND THE SLATS ARE RETRACTED. IF THE FLAPS AND THE SLATS ARE NOT RETRACTED, AND IF YOU SELECT "FLEX TAKE OFF", THERE IS A RISK THAT THE THRUST WILL GO TO "MAX TAKE OFF".

(1) Make sure that the flaps and the slats are retracted (Ref. AMM TASK 27-50-00-866-009).

Subtask 73-29-00-861-069-A

C. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 73-29-00-865-080-A

D. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 1000EM1 (ENGINE1)
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
FOR FIN: 1000EM2 (ENGINE2)
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41

Subtask 73-29-00-869-077-A

E. Continue to Prepare for Idle Test
(1) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(2) Make sure that fire-fighting personnel is there.
(3) On the lower ECAM display unit:

CAUTION: MAKE SURE THAT THE HYDRAULIC RESERVOIR PRESSURE IS IN THE CORRECT OPERATION RANGE BEFORE YOU START THE ENGINE. THE HYDRAULIC FLUID IS NECESSARY TO LUBRICATE THE HYDRAULIC PUMPS THAT THE ENGINE OPERATES.

(a) Get the HYDRAULIC page.
(b) Make sure that the pressure of the Green reservoir for the engine 1 (Yellow reservoir for the engine 2) is correct.
(c) Make sure that the reservoir fluid level is correct.
(4) Make sure that the engine 1(2) pump is serviceable (on the ENG panel 40VU, the OFF legend of the ENG 1(2) PUMP pushbutton switch must be off).

Subtask 73-29-00-710-071-A

F. Do the operational test of the engine fire and overheat detection (loop/squib) (Ref. AMM TASK 26-12-00-710-001).

Subtask 73-29-00-869-078-A

G. Continue to prepare for test
(1) On the RUD TRIM/PARKING BRK panel 110VU:
(a) Make sure that the parking-brake control switch is set to ON.
(2) On the ENG panel 115VU:
(a) Make sure that the ENG/MASTER 1(2) control switch is set to OFF.
(3) Make sure that the throttle control lever of the engine 1(2) is in the idle stop position (zero on the graduated sector).
(4) On the center instrument panel 400VU, make sure that:
(a) The brake pressure indication on the brake Yellow-pressure triple-indicator is correct. If necessary, pressurize the brake accumulator with Yellow Pump (Ref. AMM TASK 29-10-00-863-002).
(b) The landing-gear normal control-lever is in the DOWN position.
(5) Make sure that the interphone system operates correctly.
(6) Make sure that the aircraft is cleared and that no one stays in the dangerous areas.
(7) On the lower ECAM display unit:
(a) Get the FUEL page. Make sure that there is the correct quantity of fuel in the fuel tanks to run the engine.
(8) On the ENG panel 40VU:
(a) If there is fuel in the Center tank, make sure that MODE SEL is in AUTO (the MAN legend off).
(b) Push all the FUEL/PUMPS pushbutton switches (the OFF legends of these pushbutton switches go off).
(9) Do a check of the oil quantity.
(10) Supply the aircraft pneumatic system from a HP ground power unit or the APU (Ref. AMM TASK 36-12-00-860-805) or (Ref. AMM TASK 36-12-00-860-806).

NOTE: The minimum recommended starter air supply pressure is 25 PSI, when the start valve is open.
Two external pneumatic power units may be used in parallel, if the pressure/flow relation is expected to be marginal.

(11) On the overhead CTL & PNL panel 25VU:
(a) Set the EXT LT/BEACON switch to ON
(12) 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 73-29-00-750-051-A

WARNING: AFTER AN ABORT OF THE ENGINE STARTING SEQUENCE, A DRY CRANK, TO REMOVE FUEL VAPOURS, WILL OCCUR, ACCOMPANIED BY ECAM MESSAGE:

AUTO CRANK IN PROGRESS

ON COMPLETION OF THE DRY CRANK, ALWAYS PUT THE "ENG/MASTER" SWITCH BACK TO THE "OFF" POSITION WHEN INSTRUCTED BY ECAM MESSAGE:

ENG MASTER OFF.

IF YOU ONLY CHANGE THE POSITION OF THE ENGINE MODE SELECTOR SWITCH (FROM "IGN/START" TO "NORM"), THE FADEC SYSTEM WILL NOT COMPLETE THE ABORT. THERE IS THUS A RISK THAT THE ENGINE WILL START. THIS CAN CAUSE INJURIES TO PERSONS.

CAUTION: DO NOT OPERATE THE ENGINE IF THE FUEL INLET PRESSURE IS NOT POSITIVE (THE FUEL IS NECESSARY TO LUBRICATE THE ENGINE FUEL PUMP AND THE FMU AND THUS PREVENT DAMAGE).

A. Idle Test (Menu Mode)

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
Rotary selector on CRANK or IGN/START or invalid
Manual Start Button on ON or invalid
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 a running test or special function when any of the following conditions becomes set:

N2 more than 85 percent or invalid
TLA (Throttle Lever Angle) not at idle or invalid
Aircraft in the air
N2 drops below 20 percent after going above 20 percent
N2 more than 20 percent for two minutes during crank or start phase
You enter in the interactive mode of the other channel
Idle test has run with N2 more than 55 percent for ten minutes or more.

(1) On the ENG section of maintenance panel 50VU:
(a) Release the FADEC GND PWR1(2) pushbutton switch. The ON legend of this pushbutton switch comes on.
1 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 MCDU, get the SYSTEM REPORT/TEST/ENG page (Ref. AMM TASK 31-32-00-860-012).
(3) Do the aircraft preparation.

ACTION	RESULT
1.On the MCDU main ENGINE TEST screen Push in the key adjacent to the ENGINE TESTS. NOTE: X for Engine, Y for Channel	The ENGINE X MAIN MENU is shown.
Push in the key adjacent to the IDLE TEST indication. NOTE: If the return key is selected on the MCDU during a running test or special function, the EEC will abort the test. FUNCTION TERMINATED will be displayed on the MCDU. You will need to select the return key and start the test again.	ENGINE IDLE TEST is shown.
2.On the ENGINE IDLE TEST screen select: PUSH BUTTON TO START THE TEST.	The ENGINE IDLE TEST screen displays: FOLLOW AMM ENGINE START PROCEDURE (Ref. AMM TASK 71-00-00-860-827). TEST WILL BEGIN WHEN ENGINE IDLE DETECTED
3.On the ENG panel 115VU: Make sure that the available air pressure is between 1.7 bar (24.66 psi) and 3.8 bar (55.11 psi). Set the ENG/MODE/CRANK/NORM/IGN/START selector switch to IGN/START.
4.On the ENG panel 115VU: Set the Master Lever of the tested engine to ON. NOTE: While the engine is running, do a visual check below the engine for signs of excessive leaks.	On the lower ECAM DU, on the ENGINE page: The symbol for the starter valve is in the open position. 1. Make sure that: The engine rotates. The oil pressure indication is positive.
5.On the ENG panel 115VU: Set the ENG/MODE/CRANK/NORM/IGN/START selector switch to NORM. When the engine is started we put the selector on NORM position.
6.The ENGINE IDLE TEST screen will display: TEST RUNNING	TEST COMPLETE will show.
7.On the TEST COMPLETE screen: Obey the AMM shut down procedure (Ref. AMM TASK 71-00-00-860-829). Set Master Lever OFF. NOTE: You must wait for the engine to spool down.	When engine N2 speed decreases below 40 percent, the TEST RESULT page will appear as follows: If no faults are recorded, the ENGINE IDLE TEST screen will show: TEST OK or If faults are recorded, the ENGINE IDLE TEST screen will show: FAULT REPORT page that will show the engine number, channel letter, flight leg number (00), date, time, ATA number and description of the fault.
8.When TEST OK or FAULT REPORT page is displayed: If the RETURN key is selected on the MCDU, the EEC will display the main ENGINE TEST screen.	The main ENGINE TEST screen comes into view.
9.Stop the engine (Ref. AMM TASK 71-00-00-860-829).
10.On the HYD/FUEL panel 40VU: Release all the FUEL/PUMPS pushbutton switches.	The OFF legends of these pushbutton switches come on.
11.On the ECAM control panel: Get the ENGINE page.	On the lower ECAM DU: The ENGINE page comes into view.

Subtask 73-29-00-210-051-A

B. Do a general visual inspection.
(1) If it is necessary to do a leak check:

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(a) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803).
1 FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
2 FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(b) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-807).
(c) Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-806).
1 FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
2 FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
(2) Check the engine oil level and service as necessary (Ref. AMM TASK 12-13-79-610-805).
(3) Inspect the fan inlet (Ref. AMM TASK 71-60-41-210-801) and turbine exhaust for abnormal conditions (Ref. AMM TASK 72-59-00-210-801)as necessary.
(4) If a component or engine was installed, do a leak check (Ref. AMM TASK 71-00-00-710-815).

5. Close-up
Subtask 73-29-00-869-067-A

A. Put the aircraft back to its initial configuration.
(1) Stop the pneumatic supply to the aircraft (Ref. AMM TASK 36-12-00-860-806).
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

Subtask 73-29-00-862-069-A

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 73-29-00-410-065-A

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) If necessary, close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

Subtask 73-29-00-440-055-A

D. Do the reactivation of the thrust reverser after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 73-29-00-410-066-A

E. Close Access
(1) If necessary, close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 04:34:00 UTC