Detailed Visual Inspection of the Engine Anti-Ice Supply-Duct Metallic-Fire-Seals

TASK 30-21-49-200-804-A
Detailed Visual Inspection of the Engine Anti-Ice Supply-Duct Metallic-Fire-Seals

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: 437
ZONE: 438
ZONE: 447
ZONE: 448

1. Reason for the Job
Refer to the MPD TASK: 302100-I3
DETAILED INSPECTION OF THE ENGINE ANTI-ICE SUPPLY DUCTS METALLIC FIRE SEAL.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	BORESCOPE DIA 6 MM (0.2 IN.) MAX - SIDE VIEW FLEXIBLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
437	FAN COWL
438	FAN COWL
447	FAN COWL
448	FAN COWL
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 30-21-49-000-042-A	Removal of the Pylon Anti-ice Duct
TASK 30-21-49-400-042-A	Installation of the Pylon Anti-ice Duct
TASK 30-21-49-820-001-A	Rig the Anti-ice Ducts
TASK 71-00-20-000-040-A	Removal of the Power Plant
TASK 71-00-20-000-040-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-00-20-400-040-A	Installation of the Power Plant
TASK 71-00-20-400-040-A-01	Installation of the Power Plant with the Engine Positioner TWW 75E (MIAG)
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 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
Anti-Ice Supply-Duct Metal-Fire-Seals
Typical Damage and Related Aircraft Dispatch

3. Job Set-up
Subtask 30-21-49-861-089-A ** ON A/C NOT FOR ALL

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

Subtask 30-21-49-941-117-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 5 minutes before you do this procedure.
(3) On overhead 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 1(2).

Subtask 30-21-49-865-120-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: 1000EM1 (ENGINE1)
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 1000EM2 (ENGINE2)
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-010-165-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 30-21-49-040-097-A ** ON A/C NOT FOR ALL

E. Deactivate the Thrust Reverser

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.

(1) Do the deactivation of the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 30-21-49-010-166-A ** ON A/C NOT FOR ALL

F. 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

4. Procedure
Subtask 30-21-49-210-076-A ** ON A/C NOT FOR ALL

A. Inspection of the Engine Anti-Ice Supply-Duct Metal-Fire-Seals
(1) Do an inspection of the disjoined metal seals (2) condition:
(a) Make sure that there are:

No disjoined metal seals (2) (out of the duct flanges (the castellated flange is in the core area and the full flange is in the fan area, refer to detail C)).
No damaged metal seals (2).

(b) Use a BORESCOPE DIA 6 MM (0.2 IN.) MAX - SIDE VIEW FLEXIBLE or equivalent, if necessary.
(2) If you find damage on the metal seals (2) and/or on the flanges (full flange or castellated flange):

With minimum of 1 metal seal remaining in position, refer to the typical damage and the related aircraft dispatch information on figure 602.
Typical Damage and Related Aircraft Dispatch ** ON A/C NOT FOR ALL

(a) If the damage is in the permitted limits, you can dispatch the aircraft with the conditions that follow:
1 Do the rigging of the pylon anti-ice duct (1) before the next flight (Ref. AMM TASK 30-21-49-820-001).
2 Examine the full flange and the castellated flange at 800 Flight Hours/6 calendar months (whichever the earliest):

To make sure that there is no increase in the damage
To make sure that the remaining metal seal(s) (2) is(are) in the correct position.

3 Replace the pylon anti-ice duct (1) at the next engine removal (Ref. AMM TASK 30-21-49-000-042) and (Ref. AMM TASK 30-21-49-400-042).
(b) If the damage is not in the permitted limits, the dispatch of the aircraft is not permitted. But some flights are permitted until the end of the day with the conditions that follow:
1 Do the rigging of the pylon anti-ice duct (1) before the next flight (Ref. AMM TASK 30-21-49-820-001).
2 Examine the full flange and the castellated flange after each flight:

To make sure that there is no increase in the damage
To make sure that the remaining metal seal(s) (2) is(are) in the correct position.

NOTE: If the dispatch is not permitted, contact Airbus for flyability of the pylon anti-ice duct with the damage.

(3) If you find the three disjoined and/or the damaged metal seal(s) (2):

Replace the pylon anti-ice duct (1) (Ref. AMM TASK 30-21-49-000-042) and (Ref. AMM TASK 30-21-49-400-042).
If you replace parts, remove and install the engine (Ref. AMM TASK 71-00-20-000-040) and (Ref. AMM TASK 71-00-20-400-040).

5. Close-up
Subtask 30-21-49-410-133-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) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 30-21-49-440-078-A ** ON A/C NOT FOR ALL

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

Subtask 30-21-49-410-134-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(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 30-21-49-865-121-A ** ON A/C NOT FOR ALL

D. 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: 1000EM1 (ENGINE1)
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 1000EM2 (ENGINE2)
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-862-073-A ** ON A/C NOT FOR ALL

E. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 00:30:12 UTC