Blend the Surface Damage of the Fan Exit Fairing (Splitter) [PW11]

TASK 72-21-06-320-801-A
Blend the Surface Damage of the Fan Exit Fairing (Splitter)

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

ZONE: 400

1. Reason for the Job
Use this procedure to blend any damage on the fan exit fairing.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

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

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 70-28-00-910-802-A	SPOP 533 - Blending and Buffing of Steel, Nickel, Cobalt, Aluminum and Magnesium Alloy Components
TASK 70-28-00-910-803-A	SPOP 42 - Chromate Conversion Coating of Aluminum
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 72-21-06-000-801-A	Removal of the Fan Exit Fairing (Splitter)
TASK 72-21-06-400-801-A	Installation of the Fan Exit Fairing (Splitter)
Fan Exit Fairing (Splitter)

3. Job Set-up
Subtask 72-21-06-941-055-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)
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

4. Procedure
Subtask 72-21-06-320-050-A ** ON A/C NOT FOR ALL

A. Blend the Surface Damage of the Fan Exit Fairing (Splitter)
(1) Make sure that you wipe clean all parts and tools as necessary to remove debris and prevent damage to the engine.
(2) Remove the fan exit fairing from the engine (Ref. AMM TASK 72-21-06-000-801).
(3) Do a blend repair of the surface damage by SPOP 533 (Ref. AMM TASK 70-28-00-910-802).

Table 1 Surface Damage Limits:

Inspect Area A	Serviceable Limits	Repairable Limits
Pitting and corrosion	Not permitted	0.005 in. (0.13 mm) maximum depth
Nicks, dents and scratches	Not permitted	0.010 in. (0.25 mm) maximum depth
Bolt holes for elongation/wear	Not permitted	0.025 in. (0.63 mm) maximum depth

(4) Apply a layer of chromate conversion coating on the repaired area and any aluminum surfaces that are unprotected by SPOP 42 (Ref. AMM TASK 70-28-00-910-803).
(5) Install the fan exit fairing (Ref. AMM TASK 72-21-06-400-801).
(6) Examine the assembly for foreign objects, damage and correct assembly.

5. Close-up
Subtask 72-21-06-942-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Remove the access platform(s).
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:48:50 UTC