Test No.3 : Idle Leak Check [IAE]

TASK 71-00-00-710-012-B
Test No.3 : Idle Leak Check

WARNING: DO NOT DO AN ENGINE RUN-UP AT A POWER ABOVE IDLE WITH THE THRUST REVERSER COWLS AND THE FAN COWL DOORS OPEN. BEFORE YOU DO AN ENGINE RUN-UP AT IDLE WITH THE FAN COWL DOORS OPEN, MAKE SURE THAT THE COWL DOORS ARE SAFETIED BY ALL HOLD-OPEN RODS. IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

ZONE: 400

1. Reason for the Job
Use the idle leak check to do an inspection of the fuel and oil systems for leaks or for a functional check of 7th stage bleed valves 7B, 7C and/or 10th stage bleed valve/solenoid after replacement.

NOTE: In order to do functional check of 7A bleed valve, high power run is required.

2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-410)	Isopropyl Alcohol, Reagent grade
(Material No.V02-099)	lint free cloth
(Material No.V06-030)	non-aqueous developer

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-700-013-A	Procedure to Dry Out the High Pressure Turbine (HPT) after Oil Contamination
TASK 71-00-00-710-018-A	Discontinued Start, Restart and Shutdown Procedures
TASK 71-00-00-710-022-B	Test No. 6: Electronic Engine Control (EEC) System Idle Test
TASK 71-00-00-710-043-A	Normal Engine Automatic-Start Procedure
TASK 71-00-00-710-047-A	Normal Engine Manual-Start Procedure
TASK 71-00-00-860-010-B	Engine Operation Limits, Guidelines and Special Procedures
TASK 71-00-00-860-011-C	Table of Idle Indications
TASK 71-00-00-860-011-C-01	Table of Idle Indications
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 72-50-00-200-010-A	Inspection of the Turbine Exhaust Case
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves

3. Job Set-up
Subtask 71-00-00-010-152-A ** ON A/C NOT FOR ALL

A. Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-010)

WARNING: BEFORE YOU START THE ENGINES FOR THE IDLE LEAK TEST, MAKE SURE THAT ALL HOLD-OPEN RODS ARE SERVICEABLE AND CORRECTLY LOCKED ON EACH ENGINE. IF ONE HOLD-OPEN ROD IS UNSERVICEABLE, CLOSE AND LATCH THE FAN COWL DOORS CORRECTLY. ONE MISSING OR INCORRECTLY LOCKED HOLD-OPEN ROD CAN CAUSE FAN COWL CLOSURE. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.

(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 71-00-00-040-090-A ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

B. Deactivate the Thrust Reverser

NOTE: Access to the thrust reverser area is only required if external parts in the core compartment have been disturbed during maintenance.

(1) Deactivate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 71-00-00-010-153-A ** ON A/C NOT FOR ALL

C. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 71-00-00-110-061-A ** ON A/C NOT FOR ALL

D. Prepare the Oil and Fuel Tubes
(1) Clean thoroughly areas where maintenance has been done. Use a clean lint free cloth (Material No.V02-099) made moist with V01-410Isopropyl Alcohol, Reagent grade and dry with a lint free cloth.
(2) Apply non-aqueous developer (Material No.V06-030) to the fuel and oil tubes at the locations where they were disconnected and reconnected.

Subtask 71-00-00-861-086-A ** ON A/C NOT FOR ALL

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

Subtask 71-00-00-860-139-A ** ON A/C NOT FOR ALL

F. Do the EIS start procedure (upper ECAM display unit only) (Ref. AMM TASK 31-60-00-860-001).

4. Procedure
Subtask 71-00-00-710-183-A ** ON A/C NOT FOR ALL

A. Do this test:

NOTE: For safety it is recommend that you do the test with all the fan cowl doors and thrust reverser halves closed (but this is not mandatory).

NOTE: For general information, refer to engine operation limits, guidelines and special procedures (Ref. AMM TASK 71-00-00-860-010).

NOTE: If you must do a check of the Electronic Engine Control (EEC), you can do the test, EEC system idle test at this time (Ref. AMM TASK 71-00-00-710-022).

(1) Start the engine with the normal engine automatic start procedure (Ref. AMM TASK 71-00-00-710-043) or the normal engine manual start procedure (Ref. AMM TASK 71-00-00-710-047).
(2) Operate the engine at MIN IDLE for at least five minutes.
(3) Make sure that the indications of operation are in the limits of operation, with reference to (Ref. AMM TASK 71-00-00-860-011) if required:

Make sure that you obey the precautions that are given for persons to operate an engine safely. Injury can result if you do not obey these precautions.

Subtask 71-00-00-710-184-A ** ON A/C NOT FOR ALL

B. Do a shutdown with the Discontinued Start and Shutdown Procedure (Ref. AMM TASK 71-00-00-710-018).

Subtask 71-00-00-210-082-A ** ON A/C NOT FOR ALL

C. Do an inspection of the engine for leaks

NOTE: Pay special attention to where maintenance has been done and where non-aqueous developer (Material No.V06-030) has been applied to oil or fuel tubes at there disconnect points.

(1) Use a suitable light source to examine the affected areas.
(2) If no leaks are apparent where non-aqueous developer (Material No.V06-030) was applied, remove it with a lint free cloth (Material No.V02-099) made moist with V01-410Isopropyl Alcohol, Reagent grade.

Subtask 71-00-00-210-091-A ** ON A/C NOT FOR ALL

D. Do an inspection of the turbine exhaust case for oil.
(1) Visually inspect the turbine exhaust case for oil that came out of the No.4 bearing weep tube port (Ref. AMM TASK 72-50-00-200-010).
(2) If there is oil, do the procedure to dry out the high pressure turbine after oil contamination (Ref. AMM TASK 71-00-00-700-013).

5. Close-up
Subtask 71-00-00-410-142-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) If the thrust reverser halves have been opened:
(a) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(b) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
(c) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 71-00-00-440-087-A ** ON A/C NOT FOR ALL

B. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 71-00-00-410-143-A ** ON A/C NOT FOR ALL

C. Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(1) If you opened the fan cowl doors, close them:
(a) FOR [1000EM1] (ENGINE-1), [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2), [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 71-00-00-860-140-A ** ON A/C NOT FOR ALL

D. Do the EIS stop procedure: (Ref. AMM TASK 31-60-00-860-002).

Subtask 71-00-00-862-080-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 02:28:17 UTC