Detailed Visual Inspection of Fan Cowl Doors Hinges and Surrounding Structure (150 mm around Hinge Fittings) [PW11]

TASK 71-13-00-200-803-A
Detailed Visual Inspection of Fan Cowl Doors Hinges and Surrounding Structure (150 mm around Hinge 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: ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.

1. Reason for the Job
Refer to the MPD TASK: 711311-01
DETAILED INSPECTION OF FAN COWL DOORS HINGES AND SURROUNDING STRUCTURE (150MM AROUND HINGE FITTINGS).
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	FLASHLIGHT
No specific	1	MAGNIFYING GLASS POWER 10X

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0001)	lint-free cotton cloth
(Material No.PU2-0001)	alcohol, isopropyl

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR

D. 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 71-13-02-000-801-A	Removal of the Fan Cowl Jumper Cables
TASK 71-13-02-400-801-A	Installation of the Fan Cowl Jumper Cables
TASK 71-13-10-000-801-A	Removal of the Left Engine Fan Cowl Door
TASK 71-13-10-400-801-A	Installation of the Left Engine Fan Cowl Door
TASK 71-13-20-000-801-A	Removal of the Right Fan Cowl Door
TASK 71-13-20-400-801-A	Installation of the Right Fan Cowl Door
Fan Cowl Door Hinges

3. Job Set-up
Subtask 71-13-00-941-078-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 71-13-00-010-089-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 71-13-00-110-054-A ** ON A/C NOT FOR ALL

A. Cleaning of the Fan Cowl Door Hinges and the Adjacent Structure

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(1) Clean the surfaces of the fan cowl door hinges, the attachment hardware and the adjacent structure with a clean lint-free cotton cloth (Material No.PU1-0001) and the PU2-0001alcohol, isopropyl.
(2) Remove the alcohol with a clean lint-free cotton cloth (Material No.PU1-0001) before it becomes dry.

Subtask 71-13-00-220-062-A ** ON A/C NOT FOR ALL

B. Do a Detailed Visual Inspection of the Fan Cowl Door Hinges and the Adjacent Structure

NOTE: 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 United Technologies Aerospace Systems (UTAS) for disposition.

(1) Use a FLASHLIGHT and a MAGNIFYING GLASS POWER 10X and examine the forward, middle and aft hinges. Look for dents, wear, corrosion, scratches, cracks, gouges or other damage.
(a) If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures, or contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Examine the hinge pins, washers and nuts as follows:
(a) Use the FLASHLIGHT and MAGNIFYING GLASS POWER 10X and examine the hinge pins, washers and nuts. Look for cracks, gouges, wear, corrosion, missing parts or other damage.
(b) If you find damage, replace the damaged part (Ref. AMM TASK 71-13-10-000-801) and (Ref. AMM TASK 71-13-10-400-801) or (Ref. AMM TASK 71-13-20-000-801) and (Ref. AMM TASK 71-13-20-400-801).
(c) Make sure that the hinge pins, washers and nuts are correctly attached.
(d) Tighten or replace the part, as necessary.
(3) Examine the jumper cables and the attachment hardware as follows:
(a) Use the FLASHLIGHT and MAGNIFYING GLASS POWER 10X and examine the jumper cables, screws, washers and nuts on the forward hinges. Look for breaks, wear, cracks, gouges, corrosion, missing parts and security of attachment.
1 If you find damage, replace the damaged or missing part (Ref. AMM TASK 71-13-02-000-801) and (Ref. AMM TASK 71-13-02-400-801).
(b) Make sure that the jumper cables are correctly attached.
(c) Tighten or replace the attachment hardware, as necessary.
(4) Use the FLASHLIGHT and MAGNIFYING GLASS POWER 10X and examine the structure adjacent to the hinges. Look for dents, cracks, gouges, corrosion or wear.
(a) If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems (UTAS) for disposition.

5. Close-up
Subtask 71-13-00-410-085-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 02:32:09 UTC