DOC AIRBUS | AMM A320FInstallation of the Fan Cowl Latches [PW11]
TASK 71-13-11-400-805-A
Installation of the Fan Cowl Latches
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 71-13-11-941-079-A ** ON A/C NOT FOR ALL
Subtask 71-13-11-410-069-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:57:27 UTC
Installation of the Fan Cowl Latches
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
ZONE: 400
FIN: 1470KM ** ON A/C NOT FOR ALL
FIN: 1471KM ** ON A/C NOT FOR ALL
FIN: 1472KM ** ON A/C NOT FOR ALL
1. Reason for the JobFIN: 1470KM ** ON A/C NOT FOR ALL
FIN: 1471KM ** ON A/C NOT FOR ALL
FIN: 1472KM ** ON A/C NOT FOR ALL
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | GAGE - FEELER |
| No specific | Torque wrench: range to between 200 and 175 lbf.in (2.26 and 1.98 m.daN )  |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 71-13-00-820-802-A | Adjustment of the Fan Cowl Doors |
Fan Cowl LatchesSubtask 71-13-11-941-079-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 71-13-11-010-076-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 71-13-11-420-062-A ** ON A/C NOT FOR ALL A. Installation of the Fan Cowl Latches
(2) TORQUE the nut (1) to between 200 and 175 lbf.in (2.26 and 1.98 m.daN ).
(3) Measure the gap between the washer (2) and the latch housing with a GAGE - FEELER or equivalent.
(a) Make sure that the gap is at least 0.010 in. (0.254 mm). See the figure:
(4) Install the latch No. 2 (5) on the latch housing with the bolt (3), the washer (2) and the nut (1).
(5) TORQUE the nut (1) to between 200 and 175 lbf.in (2.26 and 1.98 m.daN ).
(6) Measure the gap between the washer (2) and the latch housing with a GAGE - FEELER or equivalent.
(a) Make sure that the gap is at least 0.010 in. (0.254 mm). See the figure:
(7) Install the latch No. 3 (6) on the latch housing with the bolt (3), the washer (2) and the nut (1).
(8) TORQUE the nut (1) to between 200 and 175 lbf.in (2.26 and 1.98 m.daN ).
(9) Measure the gap between the washer (2) and the latch housing with a GAGE - FEELER or equivalent.
(a) Make sure that the gap is at least 0.010 in. (0.254 mm). See the figure:
5. Close-upCAUTION:
YOU MUST INSTALL THE BOLT WITH THE HEAD OF THE BOLT ON THE FORWARD SIDE OF THE LATCH HOUSING.
(1) Install the latch No. 1 (4) on the latch housing with the bolt (3), the washer (2) and the nut (1).(2) TORQUE the nut (1) to between 200 and 175 lbf.in (2.26 and 1.98 m.daN )
.(3) Measure the gap between the washer (2) and the latch housing with a GAGE - FEELER or equivalent.
(a) Make sure that the gap is at least 0.010 in. (0.254 mm). See the figure:
(4) Install the latch No. 2 (5) on the latch housing with the bolt (3), the washer (2) and the nut (1).
(5) TORQUE the nut (1) to between 200 and 175 lbf.in (2.26 and 1.98 m.daN )
.(6) Measure the gap between the washer (2) and the latch housing with a GAGE - FEELER or equivalent.
(a) Make sure that the gap is at least 0.010 in. (0.254 mm). See the figure:
(7) Install the latch No. 3 (6) on the latch housing with the bolt (3), the washer (2) and the nut (1).
(8) TORQUE the nut (1) to between 200 and 175 lbf.in (2.26 and 1.98 m.daN )
.(9) Measure the gap between the washer (2) and the latch housing with a GAGE - FEELER or equivalent.
(a) Make sure that the gap is at least 0.010 in. (0.254 mm). See the figure:
Subtask 71-13-11-410-069-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 fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(3) Adjust the fan cowl doors (Ref. AMM TASK 71-13-00-820-802).
(4) Remove the WARNING NOTICE(S).
(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 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(3) Adjust the fan cowl doors (Ref. AMM TASK 71-13-00-820-802).
(4) Remove the WARNING NOTICE(S).