Depreservation of the Inlet Cowl Lipskin [PW11]

TASK 71-61-10-630-801-A
Depreservation of the Inlet Cowl Lipskin

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 USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 400

1. Reason for the Job
This procedure gives instructions to remove the protective coating from the inlet cowl lipskin after parking or storage. Refer to ATA Chapter 10 and 71 for more information before you do this procedure.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	2	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	COVER - PROTECTION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0001)	Cotton Cloth, Lint-Free
(Material No.PU10-0007)	Scraper, Non-Metallic
(Material No.PU2-0001)	Alcohol, Isopropyl

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-860-832-A	Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC
TASK 71-61-10-210-801-A	General Visual Inspection of the Inlet Cowl
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance

3. Job Set-up
Subtask 71-61-10-862-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832).

Subtask 71-61-10-420-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 71-61-10-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Ground Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

4. Procedure
Subtask 71-61-10-630-050-A ** ON A/C NOT FOR ALL

A. Depreservation of the Inlet Cowl Lipskin after Storage
(1) Make sure that you remove and install all the COVER - PROTECTION as necessary to prevent damage to the engine and adjacent components.
(2) Make sure that you wipe clean all parts and tools as necessary to remove unwanted debris and prevent damage to the engine and adjacent components.
(3) Remove the protective coating from the inlet cowl lipskin:
(a) Remove the tapes and peel off the protective coating with your hands. Refer to the instructions of the manufacturer if necessary.
(b) Remove the protective coating. You can use the PU10-0007Scraper, Non-Metallic to help you. Do not use tools harder than the aluminum lipskin to prevent damage.
(c) Clean the surface of the inlet cowl lipskin with a clean PU1-0001Cotton Cloth, Lint-Free and PU2-0001Alcohol, Isopropyl.
(d) Remove the PU2-0001Alcohol, Isopropyl with a clean PU1-0001Cotton Cloth, Lint-Free before the solvent dries.
(4) Examine the inlet cowl lipskin (Ref. AMM TASK 71-61-10-210-801).

5. Close-up
Subtask 71-61-10-440-052-A ** ON A/C NOT FOR ALL

A. Do the reactivation of the thrust reverser system after the deactivation for maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 71-61-10-410-054-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Remove the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE.
(2) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 02:33:30 UTC