General Visual Inspection of the Fan Cowl Door Keepers [CFML]

TASK 71-13-13-210-802-A
General Visual Inspection of the Fan Cowl Door Keepers

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: 210
ZONE: 400

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 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CPNCL00338)	Mastinox D40

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
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. 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
Sheet Metal Protections
General Visual Inspection of Fan Cowl Door Keepers

3. Job Set-up
Subtask 71-13-13-941-080-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) Put WARNING NOTICE(S) 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) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 71-13-13-010-077-A

B. Get Access
(1) Open the fan cowl doors (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 71-13-13-020-072-A

A. Removal of the Sheet Metal Protection
(1) Remove the bolts (3) and washers (2).
(2) Remove the sheet metal protections (1), (4) and (5) from the fan cowl door.

Subtask 71-13-13-210-054-A

B. General Visual Inspection of Fan Cowl Door Keepers
(1) Do a general visual inspection of:

Clevis
Mounting plate
Adjustment nut
Compression springs
Housing Area.

(2) Make sure that there are no signs of damage (corrosion, cracks, scratches, marks, abrasion, wear or dents).
(3) If you find damage, contact SAFRAN Nacelles.
(4) Make sure that there are no loose or missing fasteners.
(5) If you find loose or missing fasteners, tighten the loose or replace the missing fasteners.
(6) Make sure that there are no signs of corrosion damage up to 150 mm (5.91 in.) around the keeper fitting.
(7) If you find corrosion damage, contact SAFRAN Nacelles.

Subtask 71-13-13-420-069-A

C. Installation of the Sheet Metal Protection
(1) Put in position the sheet metal protections (1), (4) and (5) on the fan cowl door.
(2) Install the bolts (3) and the washers (2).
(3) TORQUE the bolts (3) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )

.
(4) Brush-seal the bolts (3) and the washers (2) with Mastinox D40 (Material No.CPNCL00338) .

5. Close-up
Subtask 71-13-13-410-068-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] 2026.04.01 02:35:01 UTC