Installation of the Fan Cowl Door Latch [CFML]

TASK 71-13-13-400-805-A
Installation of the Fan Cowl Door Latch

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.

CAUTION: DO NOT EXTEND THE SLATS WHEN THE FAN COWLS AND THE THRUST REVERSER COWLS ARE OPEN. IF YOU DO THIS, DAMAGE TO THE AIRCRAFT CAN OCCUR.

ZONE: 400
FIN: 1470KM
FIN: 1471KM
FIN: 1472KM

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.79 and 0.25 m.daN (158.41 and 22.12 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CPNCL00337)	Molykote 111 NON HARDENING JOINTING PUTTY
(Material No.CPNCL02069)	LINT-FREE COTTON CLOTH
(Material No.CPNCL02589)	GENERAL CLEANING AGENT - MULTI PURPOSE

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
4	NUT	AIPC 71-13-11-13-040
5	COTTER PIN	AIPC 71-13-11-13-050

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 71-13-13-820-801-A	Adjustment of the Fan Cowl Door Latches
Latch

3. Job Set-up
Subtask 71-13-13-941-065-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 71-13-13-010-070-A

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR

4. Procedure
Subtask 71-13-13-420-060-A

A. Installation of the Fan Cowl Door Latch
(1) Clean the latch (1) and mating surfaces of the fan cowl door. Use GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and LINT-FREE COTTON CLOTH (Material No.CPNCL02069) .
(2) Carefully put the latch (1) in position on the fan cowl door.
(3) Install the latch (1) with the new AIPC 71-13-11-13-040 NUT (4), washer (3) and bolt (2).
(4) TORQUE the bolt (2) to between 1.79 and 0.25 m.daN (158.41 and 22.12 lbf.in )

.
(5) Safety the nut (4) with the AIPC 71-13-11-13-050 COTTER PIN (5).
(6) Brush seal the nut (4), washer (3) and cotter pin (5) with Molykote 111 NON HARDENING JOINTING PUTTY (Material No.CPNCL00337) .

Subtask 71-13-13-820-052-A

B. Check and Adjustment of the Fan Cowl Door Latch
(1) Adjust the fan cowl door latch (Ref. AMM TASK 71-13-13-820-801).

5. Close-up
Subtask 71-13-13-410-063-A

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 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:33:19 UTC