Removal of the Fan Cowl Strakes [PW11]

TASK 71-13-07-000-801-A
Removal of the Fan Cowl Strakes

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE 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: 1460KM ** ON A/C NOT FOR ALL
FIN: 1461KM ** ON A/C NOT FOR ALL

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	1	SPATULA - PLASTIC

B. Work Zones and Access Panels

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

C. Referenced Information

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
Fan Cowl Strake

3. Job Set-up
Subtask 71-13-07-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 71-13-07-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (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
(2) Put an ACCESS PLATFORM 2M (6 FT) in position.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 71-13-07-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Strake (1) from the Left Fan Cowl Door
(1) Remove the sealant from the washers (5) and nuts (6) on the inboard side of the fan cowl door with a SPATULA - PLASTIC or equivalent.
(2) Remove the sealant on the bolts (2) and (4) and the pins (3) on the strake (1) with a SPATULA - PLASTIC or equivalent.
(3) Remove the sealant from around the strake (1) on the fan cowl door with a SPATULA - PLASTIC or equivalent. Do not scratch the fan cowl door.
(4) Remove the two nuts (6), washers (5) and pins (3) that attach the strake (1) to the left fan cowl door.
(5) Remove the 24 bolts (2) and (4) that attach the strake (1) to the left fan cowl door.
(6) Remove the strake (1) from the left fan cowl door. Remove the shims and adhesive from under the strake (1), if necessary.

Subtask 71-13-07-020-051-A ** ON A/C NOT FOR ALL

B. Removal of the Strake (7) from the Right Fan Cowl Door
(1) Remove the sealant from the washers (5) and nuts (6) on the inboard side of the fan cowl door with a SPATULA - PLASTIC or equivalent.
(2) Remove the sealant from the bolts (2) and (4) and the pins (3) on the strake (7) with a SPATULA - PLASTIC or equivalent.
(3) Remove the sealant from around the strake (7) on the fan cowl door with a SPATULA - PLASTIC or equivalent. Do not scratch the fan cowl door.
(4) Remove the two nuts (6), washers (5) and pins (3) that attach the strake (7) to the right fan cowl door.
(5) Remove the 24 bolts (2) and (4) that attach the strake (7) to the right fan cowl door.
(6) Remove the strake (7) from the right fan cowl door. Remove the shims and adhesive from under the strake (7), if necessary.

[Rev.10 from 2021] 2026.04.01 12:57:24 UTC