Leak Test of the Nacelle Anti-Ice Supply-Ducts and Hoses with the Engine in Operation

TASK 30-21-49-790-802-A
Leak Test of the Nacelle Anti-Ice Supply-Ducts and Hoses with the Engine in Operation

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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 410

1. Reason for the Job
This task gives the leak test procedure of the anti-ice supply ducts of the inlet cowl.
The purpose of this test is to find the leaks around:

The anti-ice supply-duct couplings of the inlet cowl
The coupling nuts of the hoses.
The engines must be in operation for this procedure.

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP3010)	dry developer
(Material No.CP8004)	lockwire 0.6 mm (0.0236 in.) dia
(Material No.05RAC1)	Adhesive Film Tape-- Aluminium Foil - Sound damping -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 462AR

D. 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 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-710-003-A	Engine Automatic Start
TASK 71-00-00-710-004-A	Engine Manual Start
TASK 71-00-00-710-028-A	Engine Shutdown
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Foil Wrap Installation at Pneumatic System Joints

3. Job Set-up
Subtask 30-21-49-861-090-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 30-21-49-941-118-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC system 1(2).

Subtask 30-21-49-865-122-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 4020KM2
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-010-167-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position.

Subtask 30-21-49-040-098-A ** ON A/C NOT FOR ALL

E. Make the right thrust reverser unserviceable for maintenance, if necessary (Ref. AMM TASK 78-30-00-481-041).

Subtask 30-21-49-010-168-A ** ON A/C NOT FOR ALL

F. Open the right thrust reverser door, if necessary (Ref. AMM TASK 78-36-00-010-040).
(1) FOR [1000EM1] (ENGINE-1)
452AR
(2) FOR [1000EM2] (ENGINE-2)
462AR

4. Procedure
Subtask 30-21-49-480-050-A ** ON A/C NOT FOR ALL

A. Prepare for the Leak Test
(1) Use one of these two materials to find the location of an air leak on a pneumatic joint:
(a) Apply dry developer (Material No.CP3010) around the pneumatic joints around the pneumatic joints.
1 Apply dry developer only on the connections of the removed pneumatic components. Do not apply dry developer on all the pneumatic components.
(b) Apply Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) around the pneumatic joints.
1 Wind the foil wrap around the joint one time.
2 Twist the seam of the foil wrap tight.
3 Make the foil wrap as tight as possible on the tube but do not cause damage to the wrap.
4 Attach the foil wrap with CP8004lockwire 0.6 mm (0.0236 in.) dia at the two sides of the pneumatic joint.

Subtask 30-21-49-410-135-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the right thrust-reverser door, if necessary (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR

Subtask 30-21-49-440-079-A ** ON A/C NOT FOR ALL

C. Make the right thrust reverser serviceable after maintenance, if necessary (Ref. AMM TASK 78-30-00-081-041).

Subtask 30-21-49-410-138-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 30-21-49-862-074-A ** ON A/C NOT FOR ALL

E. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 30-21-49-861-091-A ** ON A/C NOT FOR ALL

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

Subtask 30-21-49-865-123-A ** ON A/C NOT FOR ALL

G. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 4020KM2
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-710-062-A ** ON A/C NOT FOR ALL

H. Test
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) On the ANTI ICE section of overhead control and indicator panel 25VU:

Make sure that the ENG1(2) pushbutton switch is released (ON legend off).

(3) Start the related engine (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004) and keep it at the minimum idle.
(4) On the ANTI ICE section of overhead control and indicator panel 25VU:

Push the ENG1(2) pushbutton switch (the ON legend comes on).
After five minutes, release the ENG1(2) pushbutton switch (the ON legend goes off).

(5) Stop the engine (Ref. AMM TASK 71-00-00-710-028).

Subtask 30-21-49-860-082-A ** ON A/C NOT FOR ALL

I. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC system 1(2).

Subtask 30-21-49-865-124-A ** ON A/C NOT FOR ALL

J. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 4020KM2
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-010-170-A ** ON A/C NOT FOR ALL

K. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position.

Subtask 30-21-49-040-099-A ** ON A/C NOT FOR ALL

L. Make the right thrust reverser unserviceable for maintenance, if necessary (Ref. AMM TASK 78-30-00-481-041).

Subtask 30-21-49-010-169-A ** ON A/C NOT FOR ALL

M. Open the right thrust-reverser door, if necessary (Ref. AMM TASK 78-36-00-010-040).
(1) FOR [1000EM1] (ENGINE-1)
452AR
(2) FOR [1000EM2] (ENGINE-2)
462AR

Subtask 30-21-49-020-096-A ** ON A/C NOT FOR ALL

N. Visual Inspection
(1) Make sure that there are no leaks at the couplings at the anti-ice valve of the related engine air intake, or
(2) Make sure that there are no leaks at the couplings at the NAI supply ducts of the related engine air intake, or
(3) Make sure that there are no leaks at the hoses coupling nuts of the related engine air intake.
(4) Remove the materials that you used to do the leak test.

5. Close-up
Subtask 30-21-49-860-083-A ** ON A/C NOT FOR ALL

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

Subtask 30-21-49-865-125-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 4020KM2
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-410-136-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the right thrust-reverser door, if necessary (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR

Subtask 30-21-49-440-080-A ** ON A/C NOT FOR ALL

D. Make the right thrust reverser serviceable after maintenance, if necessary (Ref. AMM TASK 78-30-00-081-041).

Subtask 30-21-49-410-137-A ** ON A/C NOT FOR ALL

E. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 30-21-49-862-075-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 00:29:55 UTC