Removal of the Nacelle External Markings

TASK 11-24-71-000-808-A
Removal of the Nacelle External Markings

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

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.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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

CAUTION: WEAR LINT FREE COTTON GLOVES WHEN YOU TOUCH THE CLEAN OR TREATED SURFACES. BARE HANDS CAN CAUSE CONTAMINATION.

CAUTION: DO NOT LET TURCO 5351 STRIPPER SOLUTION DRY ON THE SURFACE.

ZONE: 437
ZONE: 438
ZONE: 447
ZONE: 448

1. Reason for the Job

NOTE: The nacelle external markings are referred to in this procedure as markings.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	1	BRUSH - ACID
No specific	1	SPATULA - PLASTIC
No specific	AR	WARNING NOTICE(S)
98L12003001000	AR	HARNESS,SAFETY

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05NAD2)	Adhesive Transfer Tape-- High Temperature -
(Material No.05RDA1)	Adhesive Film Tape-Masking - -
(Material No.08BBD2)	Non Aqueous Cleaner-- Isopropyl Alcohol Reagent grade
(Material No.09EBA1)	Methylene Chloride / Phenolic Stripper-General Use Process - -
(Material No.14FAD5)	Abrasive-- Grain APU
(Material No.14SBA1)	Textile-Lint free Cotton -
No specific	abrasive paper, grain 180
No specific	abrasive paper, grain 220
No specific	abrasive paper, grain 320
No specific	demineralized water

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
437	FAN COWL
438	FAN COWL
447	FAN COWL
448	FAN COWL

D. Referenced Information

REFERENCE	DESIGNATION
TASK 78-30-00-040-040-A	Deactivation of the Thrust Reverser System
TASK 78-30-00-040-040-B	Deactivation of the Thrust Reverser System

3. Job Set-up
Subtask 11-24-71-941-065-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put the WARNING NOTICE(S) in position to tell persons not to start engine 1(2).
(b) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(2) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 11-24-71-040-059-A ** ON A/C NOT FOR ALL

B. Deactivation of the Thrust Reverser

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) Deactivate the thrust reverser system (Ref. AMM TASK 78-30-00-040-040).

Subtask 11-24-71-010-066-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put on and attach the HARNESS, SAFETY before you start work in the work area.
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at the work area.
(3) Get access to the area from where you must remove the markings.

4. Procedure
Subtask 11-24-71-000-052-A ** ON A/C NOT FOR ALL

A. Removal of the Nacelle External Markings
(1) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol Reagent grade (Material No.08BBD2) and the Textile-Lint free Cotton - (Material No.14SBA1) and quickly remove the Non Aqueous Cleaner-- Isopropyl Alcohol Reagent grade (Material No.08BBD2) with the Textile-Lint free Cotton - (Material No.14SBA1) before it becomes dry.
(2) Apply Adhesive Film Tape-Masking - - (Material No.05RDA1) around the marking area.
(3) Remove the markings with Abrasive-- Grain APU (Material No.14FAD5) , abrasive paper, grain 180, abrasive paper, grain 220 or abrasive paper, grain 320.
(4) If necessary, remove the remaining markings with the SPATULA - PLASTIC.
(5) Do not remove the paint below the markings.
(6) Remove the Adhesive Film Tape-Masking - - (Material No.05RDA1) .
(7) If you cannot remove the markings easily:
(a) Apply Adhesive Transfer Tape-- High Temperature - (Material No.05NAD2) around the edge of the markings.
(b) Apply 09EBA1Methylene Chloride / Phenolic Stripper-General Use Process - - on the surface of the markings with the BRUSH - ACID.
(c) If necessary, apply more 09EBA1Methylene Chloride / Phenolic Stripper-General Use Process - - on the surface of the markings to remove them.
(d) Remove the 09EBA1Methylene Chloride / Phenolic Stripper-General Use Process - - from the surface of the markings with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with demineralized water.
(e) Dry the area with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Remove the Adhesive Transfer Tape-- High Temperature - (Material No.05NAD2) .
(8) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol Reagent grade (Material No.08BBD2) and the Textile-Lint free Cotton - (Material No.14SBA1) and quickly remove the Non Aqueous Cleaner-- Isopropyl Alcohol Reagent grade (Material No.08BBD2) with the Textile-Lint free Cotton - (Material No.14SBA1) before it becomes dry.

[Rev.10 from 2021] 2026.03.31 22:54:08 UTC