DOC AIRBUS | AMM A320FClosing of the Fan Cowl Doors [CFMB]
TASK 71-13-00-410-040-B
Closing of the Fan Cowl Doors
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 71-13-00-860-050-A ** ON A/C NOT FOR ALL
Subtask 71-13-00-410-050-A ** ON A/C NOT FOR ALL
Subtask 71-13-00-942-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:25:20 UTC
Closing of the Fan Cowl Doors
ZONE: 400
1. Reason for the JobNOTE: VSB RA32071-163 (equivalent to Airbus service bulletin SB 71-1068)
Introduction of a lockable latch in the forward position (position 1 FWD latch) that must be opened and closed and locked with a key and flag assembly. The key and flag assembly are stowed in the cockpit and must not be used if there is damage to the key or flag. The key always has to stay with the latch.
2. Job Set-up InformationIntroduction of a lockable latch in the forward position (position 1 FWD latch) that must be opened and closed and locked with a key and flag assembly. The key and flag assembly are stowed in the cockpit and must not be used if there is damage to the key or flag. The key always has to stay with the latch.
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-800-041-A | Adjustment of the Fan Cowl Doors |
Fan Cowl DoorsSubtask 71-13-00-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
4. Procedure(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
Subtask 71-13-00-410-050-A ** ON A/C NOT FOR ALL
A. Stowage of the hold-open rods
(1) Support the weight of the fan cowl door.
(2) Move the attachment lock on the rod assembly to release the hold-open rods from the attachment brackets on the engine.
(3) Move the hold-open rod assembly away from the engine case.
(4) Pression of the release levers
(5) Attach the hold-open rods to the stow brackets located on the fan cowl doors. Make sure they lock into place on the attach brackets.
Subtask 71-13-00-410-069-B ** ON A/C NOT FOR ALL (1) Support the weight of the fan cowl door.
(2) Move the attachment lock on the rod assembly to release the hold-open rods from the attachment brackets on the engine.
(3) Move the hold-open rod assembly away from the engine case.
(4) Pression of the release levers
CAUTION:
ONLY A SMALL FORCE IS REQUIRED TO OPERATE THE RELEASE LEVERS. IF YOU USE TOO MUCH FORCE, YOU CAN CAUSE DAMAGE TO THE COMPONENT. IF IT IS DIFFICULT TO OPERATE THE RELEASE LEVERS, A TWISTING ACTION ON THE CONCENTRIC RODS WILL EASE OPERATION.
CAUTION:
MAKE SURE THAT THE HOLD OPEN RODS ARE CORRECTLY SECURED AND LOCKED TO THE STOW BRACKETS. IF YOU DO NOT OBEY THIS CAUTION, DAMAGE TO THE FAN COWL DOOR CAN OCCUR.
(a) Press the release lever and retract the hold-open rod assembly until the minimum extension is reached. (5) Attach the hold-open rods to the stow brackets located on the fan cowl doors. Make sure they lock into place on the attach brackets.
B. Close the fan cowl doors
(2) Press the fan cowl doors together to engage the doors latches.
(3) Clevis use recommendation:
POST SB RA32071-163
(5) For #1 (forward) latch, first push, then rotate the key 90 degrees in the clockwise direction until it is aligned with the lock indicator.
(7) Make sure that all the latch handles stay in the fan cowl slots and are aligned with the adjacent fan cowl surface.
(8) Adjust the fan cowl latches, if required (Ref. AMM TASK 71-13-00-800-041).
(9) Store the fan cowl key and flag in the cockpit.
END OF POST SB RA32071-163
5. Close-upCAUTION:
DO NOT LEAVE THIS JOB AFTER JUST CLOSING THE FAN COWLS, CONTINUE ON TO SECURE THE LATCHES. IF YOU ARE CALLED AWAY PRIOR TO LATCHING, THEN EITHER RE-OPEN ONE COWL DOOR OR LATCH THE LATCHES BEFORE WALKING AWAY FROM THIS ENGINE.
CAUTION:
DO NOT USE A KEY WITHOUT FLAG TO OPERATE THE FAN COWL DOOR. DO NOT STOW A KEY WITHOUT FLAG IN THE COCKPIT.
WHEN YOU USE AND STOW THE KEY, MAKE SURE THAT IT HAS A FLAG ATTACHED TO IT.
IF THE FLAG IS MISSING OR DAMAGED, IT MUST BE REPLACED BEFORE THE KEY CAN BE USED OR STOWED AGAIN.
(1) Lower the fan cowl doors. (2) Press the fan cowl doors together to engage the doors latches.
(3) Clevis use recommendation:
CAUTION:
DO NOT TURN THE CLEVISES. IF YOU TURN THE CLEVISES, YOU CAN CAUSE DAMAGE TO THE HOUSING GUIDE. IF THE GUIDE IS DAMAGED, THE CLEVIS CAN TURN. IF THE CLEVIS CAN TURN, THE CLEVIS CAN NOT ENGAGE CORRECTLY WITH THE LATCH AND CAN KEEP THE LATCH FROM CLOSING CORRECTLY. IF THE LATCHES ARE NOT CLOSED CORRECTLY, THE FAN COWLS CAN OPEN IN FLIGHT.
(a) Make sure that the latch hooks on the left fan cowl door are correctly engaged in the clevises on the right fan cowl door. CAUTION:
USE YOUR HANDS TO OPERATE THE FAN COWL LATCHES. IF YOU USE SOMETHING DIFFERENT FROM YOUR HANDS TO OPERATE THE LATCHES, YOU CAN CAUSE DAMAGE TO THE LATCHES.
CAUTION:
MAKE SURE THAT ALL THE LATCHES ARE CLOSED CORRECTLY WHEN THE FAN COWLS ARE CLOSED. IF THE LATCHES ARE NOT CLOSED CORRECTLY, THE FAN COWLS CAN OPEN IN FLIGHT.
(4) Close the three latches: - Close the three latches in a sequence from rear to front.
POST SB RA32071-163
(5) For #1 (forward) latch, first push, then rotate the key 90 degrees in the clockwise direction until it is aligned with the lock indicator.
NOTE: To ease operation, you can use your other hand to push the handle before you turn the key.
(6) Remove the fan cowl key and flag. (7) Make sure that all the latch handles stay in the fan cowl slots and are aligned with the adjacent fan cowl surface.
(8) Adjust the fan cowl latches, if required (Ref. AMM TASK 71-13-00-800-041).
(9) Store the fan cowl key and flag in the cockpit.
END OF POST SB RA32071-163
Subtask 71-13-00-942-051-A ** ON A/C NOT FOR ALL
A. Remove the WARNING NOTICE(S).
Subtask 71-13-00-970-052-A ** ON A/C NOT FOR ALL B. Make a record in the aircraft logbook that the Fan Cowl Doors have been closed.