Installation of the Nacelle External Markings

TASK 11-24-71-400-810-A
Installation of the Nacelle External Markings

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

ZONE: 437
ZONE: 438
ZONE: 447
ZONE: 448
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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) - ADJUSTABLE
No specific	1	BRUSH - BRISTLED, FIBER, SOFT
No specific	1	ROLLER - RUBBER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0001)	Cotton, Lint-Free
PU1-0025	Abrasive Cloth, Aluminum Oxide
(Material No.PU1-0046)	Masking tape
(Material No.PU2-0001)	Alcohol, Isopropyl
(Material No.PU4-0014)	Curing Solution
(Material No.PU4-0015)	Thinner/Reducer
(Material No.PU4-0016)	Topcoat, Clear Polyurethane
(Material No.PU4-0016A)	Topcoat, Clear Polyurethane

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 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
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
Nacelle External Markings

3. Job Set-up
Subtask 11-24-71-941-063-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 11-24-71-010-064-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zones 437(438) and 447(448).

Subtask 11-24-71-040-057-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable.

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 for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

4. Procedure
Subtask 11-24-71-400-051-A ** ON A/C NOT FOR ALL

A. Installation of Flymark V6 Decals with Pressure Sensitive Adhesive
(1) 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.
(2) Install the applicable fan cowl markings in the specified locations as shown on illustration.
(3) Install the Flymark V6 Decals with pressure sensitive adhesive as follows:
(a) Lightly rub the surface where you will apply the topcoat with the PU1-0025 Abrasive Cloth, Aluminum Oxide.
(b) Clean the surface with the PU1-0001Cotton, Lint-Free made moist with PU2-0001Alcohol, Isopropyl.
(c) Remove the PU2-0001Alcohol, Isopropyl with the clean PU1-0001Cotton, Lint-Free before it dries.

CAUTION: BEFORE YOU INSTALL THE DECALS, MAKE SURE THAT THE TEMPERATURE OF THE PART SURFACES IS BETWEEN 50 AND 90 DEG.F (10 AND 32 DEG.C). SURFACES WITH TEMPERATURES BELOW 50 DEG.F (10 DEG.C) CAN CAUSE THE DECALS TO NOT BOND CORRECTLY.

(d) Put the adhesive-backed Flymark V6 decal on the necessary flat area of the part or assembly and apply pressure along the surface of the decal with your hand or a ROLLER - RUBBER.
(4) Apply the topcoats on the Flymark V6 decal as follows:
(a) Make a mask around the topcoat area with the Masking tape (Material No.PU1-0046)
The topcoat must extend0.125 IN. (3.175 MM) after the edge of the Flymark V6 decal.

NOTE: The Masking tape (Material No.PU1-0046) must not be more than six months old from the date of manufacture.

(b) Prepare a mixture of PU4-0016Topcoat, Clear Polyurethane or PU4-0016ATopcoat, Clear Polyurethane, Curing Solution (Material No.PU4-0014) and PU4-0015Thinner/Reducer.
Refer to the manufacturer's instructions.

NOTE: Use the PU4-0016Topcoat, Clear Polyurethane mixture in less than four hours of mixing. Use the PU4-0016ATopcoat, Clear Polyurethane mixture in less than 30 minutes of mixing.

(c) Apply a layer of the mixture on the decal(s) with the BRUSH - BRISTLED, FIBER, SOFT.
The topcoat must extend0.125 IN. (3.175 MM) after the edge of the Flymark V6 decal.
(d) Make sure that you can read the decal(s) correctly after you apply the topcoat and that it(they) does(do) not have deformation.
(e) Let the topcoat dry for 15 minutes.
(f) Apply a second layer of the mixture on the decal(s) with the BRUSH - BRISTLED, FIBER, SOFT.
The topcoat must extend0.125 IN. (3.175 MM) after the edge of the Flymark V6 decal.
(g) Make sure again that you can read the decal(s) correctly after you apply the topcoat and that it(they) does(do) not have deformation.
(h) Remove the Masking tape (Material No.PU1-0046) immediately after you apply the second topcoat to prevent ridges along the edges of the topcoat.

5. Close-up
Subtask 11-24-71-440-054-A ** ON A/C NOT FOR ALL

A. Make the thrust reverser serviceable.
(1) Do the reactivation of the thrust reverser after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 11-24-71-410-057-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.03.31 22:54:17 UTC