DOC AIRBUS | AMM A320FInstallation of the Fan Cowl Door Latches and Keepers [CFMI]
TASK 71-13-13-400-040-A
Installation of the Fan Cowl Door Latches and Keepers
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 71-13-13-860-050-A ** ON A/C NOT FOR ALL
Subtask 71-13-13-140-051-A ** ON A/C NOT FOR ALL
Subtask 71-13-13-410-052-A ** ON A/C NOT FOR ALL
Subtask 71-13-13-420-054-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:22:32 UTC
Installation of the Fan Cowl Door Latches and Keepers
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
ADJUST THE FAN COWL DOORS WHEN A NEW LATCH IS INSTALLED. IF THE FAN COWL DOORS ARE NOT CORRECTLY ADJUSTED THE DOORS CAN OPEN IN FLIGHT.
1. Reason for the JobNOTE: SB RA32071-163 (equivalent to Airbus service bulletin SB 71-1068) introduces a lockable latch in the forward position (Latch No.1) 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.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP5063) | silicone lubricant |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 40 | COTTER PIN | AIPC 71-13-13-01-010 |
| REFERENCE | DESIGNATION |
|---|---|
| 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 71-13-00-800-040-A | Adjustment of the Fan Cowl Doors |
Fan Cowl Door and ClevisSubtask 71-13-13-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On overhead maintenance panel 50VU, make sure that the ON legend of 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 FADEC 1(2).
Subtask 71-13-13-010-054-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On overhead maintenance panel 50VU, make sure that the ON legend of 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 FADEC 1(2).
B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
Subtask 71-13-13-140-051-A ** ON A/C NOT FOR ALL
A. Make sure that the surface where the bolt (20) is installed is clean.
Subtask 71-13-13-640-051-A ** ON A/C NOT FOR ALL B. Clean the bolt (20) threads and apply the silicone lubricant (Material No.CP5063) on the bolt (20) threads.
Subtask 71-13-13-420-051-A ** ON A/C NOT FOR ALL C. Installation of the Fan Cowl Door Latches
PRE SB RA32071-117
PRE SB RA32071-163
(1) Install the latch (45) on the left fan cowl door with the bolt (20), bushings (25), washer (30) and nut (35).
(2) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN )
and install a new AIPC 71-13-13-01-010 COTTER PIN (40).
(3) Install the housing (55) on the right fan cowl door with the bolts (60), washers (65) and nuts (70).
(4) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ) .
(5) Install the clevis (50) in the housing unit (55).
(b) Turn the nut (75) counterclockwise until it engages the clevis (50) and you can see some of the threads of the clevis (50) at the back of the housing (55).
END OF PRE SB RA32071-117
POST SB RA32071-117
(6) Install the latch (45) on the left fan cowl door with the bolt (20), the bushings (25), the washer (30) and the nut (35).
(7) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN ) .
(8) Installation of the cotter pin:
(9) Install the housing (55) and the restrainer (80) on the right fan cowl door with the bolts (60), the washers (65) and the nuts (70).
(10) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ) .
(11) Install the clevis (50) in the housing (55).
(b) Turn the nut (75) counterclockwise until it engages the clevis (50) and you can see some of the threads of the clevis (50) at the back of the housing (55). Make sure the clevis (50) is in the restrainer (80).
END OF POST SB RA32071-117
END OF PRE SB RA32071-163
Subtask 71-13-13-420-065-A ** ON A/C NOT FOR ALL PRE SB RA32071-117
PRE SB RA32071-163
(1) Install the latch (45) on the left fan cowl door with the bolt (20), bushings (25), washer (30) and nut (35).
(2) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN )
and install a new AIPC 71-13-13-01-010 COTTER PIN (40). (3) Install the housing (55) on the right fan cowl door with the bolts (60), washers (65) and nuts (70).
(4) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (5) Install the clevis (50) in the housing unit (55).
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) Put the threaded end of the clevis (50) into the housing (55) until it touches the nut (75). Make sure the guide of the housing (55) is in the groove of the clevis (50). (b) Turn the nut (75) counterclockwise until it engages the clevis (50) and you can see some of the threads of the clevis (50) at the back of the housing (55).
END OF PRE SB RA32071-117
POST SB RA32071-117
(6) Install the latch (45) on the left fan cowl door with the bolt (20), the bushings (25), the washer (30) and the nut (35).
(7) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN )
. (8) Installation of the cotter pin:
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
(a) Install a new cotter pin (40). (9) Install the housing (55) and the restrainer (80) on the right fan cowl door with the bolts (60), the washers (65) and the nuts (70).
(10) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (11) Install the clevis (50) in the housing (55).
CAUTION:
DO NOT TURN THE CLEVIS. IF YOU TURN THE CLEVIS, YOU CAN CAUSE DAMAGE TO THE GUIDE OF THE HOUSING.IF THE GUIDE IS BROKEN,THE CLEVIS CAN TURN AND IT CAN NOT ENGAGE CORRECTLY WITH THE LATCH AND KEEP THE LATCH FROM CLOSING CORRECTLY. IF THE LATCHES ARE NOT CLOSED CORRECTLY, THE FAN COWLS CAN OPEN IN FLIGHT.
(a) Put the threaded end of the clevis (50) into the housing (55) until it touches the nut (75). Make sure the guide of the housing (55) is in the groove of the clevis (50). (b) Turn the nut (75) counterclockwise until it engages the clevis (50) and you can see some of the threads of the clevis (50) at the back of the housing (55). Make sure the clevis (50) is in the restrainer (80).
END OF POST SB RA32071-117
END OF PRE SB RA32071-163
D. Installation of fan cowl door keyed latch (position #1 (FWD) only) and keeper assembly.
PRE SB RA32071-117
POST SB RA32071-163
(1) Install the keyed latch (90) on the left hand door with bolt (20), bushings (25), washer (30) and nut (35).
(2) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN ) .
(3) Installation of the cotter pin:
(4) Install the adjustable-keeper housing (85) on the right hand fan cowl door with bolts (60), washers (65) and nuts (70).
(5) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ) .
(6) Installation of the clevis:
(b) Put the threaded end of the clevis (95) into the adjustable-keeper housing (85) until it touches the nut (75). Make sure the guide of the adjustable-keeper housing is in the groove of the clevis (95).
(c) Turn the nut (75) counterclockwise until it engages the clevis (95) and you can see some threads of the clevis (95) at the back side of the adjustable-keeper housing (85).
END OF PRE SB RA32071-117
END OF POST SB RA32071-163
Subtask 71-13-13-420-066-A ** ON A/C NOT FOR ALL PRE SB RA32071-117
POST SB RA32071-163
(1) Install the keyed latch (90) on the left hand door with bolt (20), bushings (25), washer (30) and nut (35).
(2) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN )
. NOTE: The No.1 Forward Latch should not be painted.
(3) Installation of the cotter pin:
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
(a) Install a new AIPC 71-13-13-01-010 COTTER PIN (40). (4) Install the adjustable-keeper housing (85) on the right hand fan cowl door with bolts (60), washers (65) and nuts (70).
(5) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (6) Installation of the clevis:
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) Install the clevis (95) in the adjustable-keeper housing (85). (b) Put the threaded end of the clevis (95) into the adjustable-keeper housing (85) until it touches the nut (75). Make sure the guide of the adjustable-keeper housing is in the groove of the clevis (95).
(c) Turn the nut (75) counterclockwise until it engages the clevis (95) and you can see some threads of the clevis (95) at the back side of the adjustable-keeper housing (85).
END OF PRE SB RA32071-117
END OF POST SB RA32071-163
E. Installation of fan cowl door keyed latch (position #1 (FWD) only) and keeper assembly.
POST SB RA32071-117
POST SB RA32071-163
(1) Install the keyed latch (90) on the left hand door with bolt (20), bushings (25), washer (30) and nut (35).
(2) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN ) .
(3) Installation of the cotter pin:
(4) Install the adjustable-keeper housing (85) and retainer (80) on the right hand fan cowl door with bolts (60), washers (65) and nuts (70).
(5) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ) .
(6) Installation of the clevis:
(b) Put the threaded end of the clevis (95) into the adjustable-keeper housing (85) until it touches the nut (75). Make sure the guide of the adjustable-keeper housing is in the groove of the clevis (95).
(c) Turn the nut (75) counterclockwise until it engages the clevis (95) and you can see some threads of the clevis (95) at the back side of the adjustable-keeper housing (85).
END OF POST SB RA32071-117
END OF POST SB RA32071-163
5. Close-upPOST SB RA32071-117
POST SB RA32071-163
(1) Install the keyed latch (90) on the left hand door with bolt (20), bushings (25), washer (30) and nut (35).
(2) TORQUE the nut (35) to between 105 and 95 lbf.in (1.19 and 1.07 m.daN )
. (3) Installation of the cotter pin:
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
(a) Install a new AIPC 71-13-13-01-010 COTTER PIN (40). (4) Install the adjustable-keeper housing (85) and retainer (80) on the right hand fan cowl door with bolts (60), washers (65) and nuts (70).
(5) TORQUE the nuts (70) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (6) Installation of the clevis:
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) Install the clevis (95) in the adjustable-keeper housing (85). (b) Put the threaded end of the clevis (95) into the adjustable-keeper housing (85) until it touches the nut (75). Make sure the guide of the adjustable-keeper housing is in the groove of the clevis (95).
(c) Turn the nut (75) counterclockwise until it engages the clevis (95) and you can see some threads of the clevis (95) at the back side of the adjustable-keeper housing (85).
END OF POST SB RA32071-117
END OF POST SB RA32071-163
Subtask 71-13-13-410-052-A ** ON A/C NOT FOR ALL
A. Close Access
(2) 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.
Subtask 71-13-13-820-051-A ** ON A/C NOT FOR ALL 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.
(1) Make sure that the work area is clean and clear of tools and other items.(2) 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.
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.
B. Do an adjustment of the fan cowl door latches (Ref. AMM TASK 71-13-00-800-040). NOTE: Use hand pressure only to operate the latches.
C. Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
Subtask 71-13-13-869-055-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
D. Make sure that the work area is clean and clear of tools and other items.
Subtask 71-13-13-942-051-A ** ON A/C NOT FOR ALL E. Remove the WARNING NOTICE(S).