Opening of the Fan Cowl Doors - Sling Method [PW11]

TASK 71-13-00-010-805-A
Opening of the Fan Cowl Doors - Sling Method

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.

WARNING: DO NOT KEEP OPEN A FAN COWL DOOR WHEN THE WIND SPEED IS 60 MPH (96 KM/H) OR MORE. IF THE WIND MOVES THE FAN COWL DOOR, INJURY TO PERSONS AND/OR DAMAGE TO THE ENGINE AND ADJACENT COMPONENTS CAN OCCUR.

WARNING: BE CAREFUL IF YOU OPEN OR CLOSE A FAN COWL DOOR WHEN THE WIND SPEED IS 25 MPH (40 KM/H) OR MORE. IF THE WIND MOVES THE FAN COWL DOOR, INJURY TO PERSONS AND/OR DAMAGE TO THE ENGINE AND ADJACENT COMPONENTS CAN OCCUR.

ZONE: 400

1. Reason for the Job
Use this procedure to open the fan cowl doors when one or more hold open rod is missing or does not operate correctly. The hold open rods will not be engaged in this procedure.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
636-2000-17GSE	1	FAN COWL HANDLING SLING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
Fan Cowl Doors
Fan Cowl Sling
Fan Cowl Aft Latch

3. Job Set-up
Subtask 71-13-00-941-081-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).

4. Procedure

WARNING: BE CAREFUL WHEN YOU LIFT THE FAN COWL DOOR WITH THE SLING. THE FAN COWL DOOR CAN MOVE FROM SIDE TO SIDE AND CAUSE INJURY TO PERSONNEL.

CAUTION: IF THE BAULK BRACKET ABOVE THE AFT LATCH (L3) IS NOT THERE OR IF ITS WEARSTRIP IS MISSING, DO NOT OPEN THE LATCH HOOK MORE THAN NECESSARY TO DISENGAGE OR ENGAGE THE KEEPER. DO NOT MOVE THE LATCH HOOK TOO MUCH IN THE DIRECTION OF THE LATCH HANDLE OR PUT THE LATCH HOOK AGAINST THE LATCH HANDLE. MAKE SURE THAT THE ANGULAR POSITION OF THE LATCH HOOK IS NOT LESS THAN 90 DEGREES FROM THE LATCH HANDLE. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE LATCH CAN HIT THE ENGINE OIL TUBE OR THE BAULK BRACKET AND CAUSE DAMAGE.

CAUTION: WHEN YOU OPEN OR CLOSE THE FAN COWL DOOR, BE CAREFUL NOT TO PUSH THE DOOR FORWARD OR AFT. IF YOU DO THIS, THE DOOR CAN HIT COMPONENTS AND CAUSE DAMAGE TO THEM OR PREVENT CORRECT ENGAGEMENT OF THE AXIAL LOCATORS.

CAUTION: DO NOT LIFT THE FAN COWL DOOR MORE THAN 52 DEGREES FROM THE VERTICAL. DAMAGE TO THE FAN COWL DOOR OR PYLON CAN OCCUR.

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE FAN COWL OR THE PYLON WHEN YOU LIFT THE FAN COWL.

CAUTION: WHEN YOU LIFT THE LEFT/RIGHT FAN COWL, BE CAREFUL NOT TO DAMAGE THE FAN COWL OR THE PYLON.

Subtask 71-13-00-010-111-A ** ON A/C NOT FOR ALL

A. Release the fan cowl door latches:

CAUTION: OPEN THE LATCHES IN THE ORDER THAT FOLLOWS. DAMAGE TO THE EQUIPMENT CAN OCCUR IF YOU DO NOT OBEY THESE INSTRUCTIONS.

(1) Push the fan cowl door latch triggers to release the (L3) aft latch (2), the (L2) center latch (4) and the (L1) forward latch (5) on the bottom of the left fan cowl door (1).
(2) Pull down each handle to open the three latches.
(3) Move the latches away from the three latch keepers (8).

NOTE: The Push Open Device (POD) on the outboard fan cowl door will push the doors apart after you release the aft latch from the latch keeper.

Subtask 71-13-00-010-097-A ** ON A/C NOT FOR ALL

B. Opening of the Left Fan Cowl Door
(1) Remove the six screws (12) from the three hoist inserts on the left fan cowl door (1). Keep them for later use.
(2) Attach the 636-2000-17GSE FAN COWL HANDLING SLING to the three hoist points on the left fan cowl door (1). Refer to the instructions of the manufacturer of the sling.
(3) Loosen the two back chains of the 636-2000-17GSE FAN COWL HANDLING SLING so that the sling is in the lifting position. Refer to the instructions of the manufacturer of the sling.
(4) Slowly lift the left fan cowl door (1) with the 636-2000-17GSE FAN COWL HANDLING SLING until you can get access to the engine. Do not lift the left fan cowl door (1) more than 52 degrees from the vertical.

Subtask 71-13-00-010-098-A ** ON A/C NOT FOR ALL

C. Opening of the Right Fan Cowl Door
(1) Remove the six screws (12) from the three hoist inserts on the right fan cowl door (11). Keep them for later use.
(2) Attach the 636-2000-17GSE FAN COWL HANDLING SLING to the three hoist points on the right fan cowl door (11). Refer to the instructions of the manufacturer of the sling.
(3) Loosen the two back chains of the 636-2000-17GSE FAN COWL HANDLING SLING so that the sling is in the lifting position. Refer to the instructions of the manufacturer of the sling.
(4) Slowly lift the right fan cowl door (11) with the 636-2000-17GSE FAN COWL HANDLING SLING until you can get access to the engine. Do not lift the right fan cowl door (11) more than 52 degrees from the vertical.
(5) Do a check of the latch handles.

CAUTION: DO NOT ENGAGE THE LATCH HANDLE HOOKS WHEN THE FAN COWL DOORS ARE OPEN.

(a) Make sure that all the latch handle hooks are not engaged.

NOTE: The hooks can create damage to the engine parts during Fan Cowl Door closure.

[Rev.10 from 2021] 2026.04.01 04:45:00 UTC