General Visual Inspection of Fan Cowl Doors Latches and Surrounding Structure (150 mm around Latch fittings) [PW11]

TASK 71-13-11-200-805-A
General Visual Inspection of Fan Cowl Doors Latches and Surrounding Structure (150 mm around Latch fittings)

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

1. Reason for the Job
Refer to the MPD TASK: 711312-02
GENERAL VISUAL INSPECTION OF FAN COWL DOORS LATCHES AND SURROUNDING STRUCTURE (150MM AROUND LATCH FITTINGS).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)

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
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 71-13-10-210-801-A	General Visual Inspection of the Fan Cowl Baulk Bracket
TASK 71-13-11-000-805-A	Removal of the Fan Cowl Latches
TASK 71-13-11-400-805-A	Installation of the Fan Cowl Latches
Fan Cowl Door Latches

3. Job Set-up
Subtask 71-13-11-941-080-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 71-13-11-010-077-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 1M(3 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 71-13-11-210-073-A ** ON A/C NOT FOR ALL

A. Do a General Visual Inspection (GVI) of the fan cowl door latches and Surrounding Structure (150 mm around Latch fittings)
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact Collins Aerospace for disposition.
(2) Examine the latches. Look for cracks, gouges, corrosion and other damage. If you find damage, replace the latch or contact Collins Aerospace for disposition (Ref. AMM TASK 71-13-11-000-805) and (Ref. AMM TASK 71-13-11-400-805).
(3) Examine the bolts, washers and nuts on the latches. Look for cracks, gouges, too much wear, corrosion, correct assembly and other damage. If you find damage, replace the damaged part (Ref. AMM TASK 71-13-11-000-805) and (Ref. AMM TASK 71-13-11-400-805).
(4) Examine the latch housings and 5.9 in. (150 mm) of the adjacent structure from the latches. Look for dents, cracks, gouges, corrosion, wear, loose or missing fasteners and other damage. If you find damage, refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact Collins Aerospace for disposition.
(5) If the baulk bracket is there, examine the baulk bracket assembly (Ref. AMM TASK 71-13-10-210-801).

5. Close-up
Subtask 71-13-11-410-070-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:32:35 UTC