Opening of the Fan Cowl Doors [PW11]

TASK 71-13-00-010-802-A
Opening of the Fan Cowl Doors

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: 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: KEEP PERSONNEL AND EQUIPMENT CLEAR OF THE FAN COWL DOORS WHEN THE HOLD OPEN RODS ARE NOT LOCKED. THE COWL DOORS CAN CLOSE QUICKLY AND INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.

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
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	AR	WARNING NOTICE(S)

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 Door
Fan Cowl Aft Latch

3. Job Set-up
Subtask 71-13-00-941-074-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).
(2) Put an ACCESS PLATFORM 2M (6 FT) in position.
(3) Retraction of the slats.

CAUTION: DO NOT OPEN THE FAN COWL IF THE WING LEADING EDGE SLATS ARE EXTENDED. DAMAGE TO THE FAN COWL, WING LEADING EDGE SLATS AND WING CAN OCCUR.

(a) Make sure that the slats are retracted.
(b) Put a WARNING NOTICE(S) in the cockpit to tell persons not to move the slat control lever.

4. Procedure

CAUTION: DO NOT LEAVE THIS JOB AFTER UNLATCHING THE FAN COWLS. IF YOU ARE CALLED AWAY PRIOR TO OPEN ONE COWL DOOR, THEN EITHER OPEN ONE COWL DOOR OR RE-LATCH THE LATCHES BEFORE WALKING AWAY FROM THIS ENGINE.

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: 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: 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.

Subtask 71-13-00-010-087-A ** ON A/C NOT FOR ALL

A. Opening of the Fan Cowl Doors
(1) Unlock the three latches.
(2) Open the latches as follows:

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

(a) Push the fan cowl door latch triggers to release the (L3) aft latch (1), (L2) center latch (3), and (L1) forward latch (4) on the bottom of the left fan cowl door (10).
(b) Pull down each handle to open the three latches.
(c) Move the latches away from the three latch keepers (9).

NOTE: The push-open device on the outboard fan cowl door will push the doors apart after you release the aft latch from the latch keeper.

(3) Opening of the left fan cowl door:
(a) Manually lift and hold the left fan cowl door (10) at the lower edge.
(b) Lift the left fan cowl door (10) until the telescoping Hold Open Rod (HOR) (12) correctly engages and locks into position and you see only the green band.
(c) Attach the fixed HOR as follows:

WARNING: MAKE SURE THAT YOU LOCKED THE TELESCOPING HOLD-OPEN ROD BEFORE YOU ATTACH THE FIXED HOLD-OPEN ROD. IF THE TELESCOPING HOLD-OPEN ROD IS SAFELY LOCKED, YOU WILL SEE A GREEN BAND ADJACENT TO THE RELEASE COLLAR AND YOU WILL NO LONGER SEE A RED BAND ADJACENT TO THE RELEASE COLLAR. INJURY AND/OR DAMAGE TO EQUIPMENT CAN OCCUR IF THE DOOR FALLS.

1 Move the quick disconnect plunger on the fixed HOR (11) away from the stow bracket.
2 Disconnect the fixed HOR (11) from the stow bracket.
3 Attach the fixed HOR (11) to the bracket on the engine.
4 Move the quick disconnect plunger away from the bracket and put the fitting attachment on the fixed HOR (11) on the bolt on the bracket.
5 Make sure that the quick disconnect plunger locks into position.
(d) Lower the left fan cowl door as follows:

WARNING: BEFORE YOU LOWER THE FAN COWL DOOR, MAKE SURE THAT THE QUICK-DISCONNECT PLUNGER ON THE FIXED HOLD-OPEN-ROD IS INSTALLED CORRECTLY AND LOCKED IN POSITION. IF YOU DO NOT OBEY THIS INSTRUCTION, THE DOOR CAN FALL AND CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

1 Slowly lower the left fan cowl door (10) until the fixed HOR (11) and the telescoping HOR (12) hold the weight of the door (10).
(4) Opening of the right fan cowl door:
(a) Manually lift and hold the right fan cowl door (15) at the lower edge.
(b) Lift the right fan cowl door (15) until the telescoping HOR (13) correctly engages and locks into position and you see only the green band.
(c) Attach the fixed HOR as follows:

1 Move the quick disconnect plunger on the fixed HOR (14) away from the stow bracket.
2 Disconnect the fixed HOR (14) from the stow bracket.
3 Attach the fixed HOR (14) to the bracket on the engine.
4 Move the quick disconnect plunger away from the bracket and put the fitting attachment on the fixed HOR (14) on the bolt on the bracket.
5 Make sure that the quick disconnect plunger locks into position.
(d) Lower the right fan cowl door as follows:

1 Slowly lower the right fan cowl door (15) until the fixed HOR (14) and the telescoping HOR (13) hold the weight of the door (15).
(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.

(6) Put an entry in the logbook to indicate that the fan cowl doors are open.

[Rev.10 from 2021] 2026.04.01 03:51:32 UTC