Air Leak in the Left Wing with the APU in Operation

TASK 36-22-00-810-832-A
Air Leak in the Left Wing with the APU in Operation

1. Possible Causes

ducts
seals

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-52-00-200-010	Hot-Air Leak-Check in the Air Conditioning Bay
AMM 24-41-00-861-002	Energize the Aircraft Electrical Circuits from the External Power
AMM 24-41-00-862-002	De-energize the Aircraft Electrical Circuits Supplied from the External Power
AMM 31-60-00-860-001	EIS Start Procedure
AMM 31-60-00-860-002	EIS Stop Procedure
AMM 36-22-00-790-001	Leak Check on all the Bleed Air Ducts and Packs Components
AMM 49-00-00-860-003	APU Start by External Power
AMM 49-00-00-860-004	APU Shutdown by External Power
AMM 49-00-00-860-005	APU Start by External Power
AMM 49-00-00-860-006	APU Shutdown by External Power
AMM 49-00-00-860-008	APU Start by External Power
AMM 49-00-00-860-009	APU Shutdown by External Power (131-9(A))

3. Fault Confirmation
Subtask 36-22-00-860-050-A ** ON A/C NOT FOR ALL

A. Job Set-up
(1) Energize the aircraft electrical circuits
AMM 24-41-00-861-002.
(2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)
AMM 31-60-00-860-001.

Subtask 36-22-00-710-092-A ** ON A/C NOT FOR ALL

B. Test
(1) Start the APU:

(2) On the AIR COND panel 30VU, push the APU BLEED pushbutton switch (5HV) (the ON legend comes on).

4. Fault Isolation
Subtask 36-22-00-810-090-A ** ON A/C NOT FOR ALL

A. On the upper ECAM DU, if the AIR L WING LEAK warning comes into view:

do a leak test on the bleed air ducts AMM 36-22-00-790-001.

(1) If there are leaks:

replace the defective ducts or seals as necessary.

(2) If there is no leak:

do a hot-air leak check in the air conditioning bay AMM 21-52-00-200-010.

(a) If there are cracks or damage on the ducts:

replace the defective ducts .

(b) If there are leaks on the seals:

replace the defective seals .

5. Close-up
Subtask 36-22-00-860-051-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the AIR COND panel 30VU, release the APU BLEED pushbutton switch (5HV) (the ON legend goes off).
(2) Stop the APU:

(3) Do the EIS stop procedure
AMM 31-60-00-860-002.
(4) De-energize the aircraft electrical circuits
AMM 24-41-00-862-002.

[Rev.8 from Aug 2018] 2026.04.04 04:34:06 UTC