Inspection of the LP Compressor Annulus Fillers [IAE]

TASK 72-31-11-200-012-B
Inspection of the LP Compressor Annulus Fillers

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 210
ZONE: 400

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	AR	MAT - WORK
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS

C. Referenced Information

REFERENCE	DESIGNATION
TASK 72-31-11-300-010-B	Repair of the LP Compressor Annulus Fillers - VRS1815
TASK 72-31-11-300-015-A	Repair of the Low Pressure Compressor (LPC) Annulus Fillers - Repair VRS1113
TASK 72-31-11-300-022-A	Repair of the LP Compressor Annulus Filler Touch-up Coating - VRS1059
Annulus Fillers - Dry Film Lubricant Coating Area

3. Job Set-up
Subtask 72-31-11-941-082-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put the WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the 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) to tell persons not to energize the FADEC 1(2).
(4) Put the support equipment in position.
(a) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the engine for the inspection task.
(b) Put the MAT - WORK in position in the fan case.
1 Make sure that the red warning pennants of the workmat can be seen external of the aircraft.
2 Make sure the workmat has sufficient dimensions to give full protection to the lower half of the fan case surface.

4. Procedure
Subtask 72-31-11-210-089-A ** ON A/C NOT FOR ALL

A. Inspection of the Annulus Fillers
(1) Examine the outer surfaces of the annulus fillers for cracks, nicks, dents and scores.
(a) If they are cracked, reject them.
(b) If they have nicks, dents or scores up to 0.005 in. (0.13 mm) in depth, accept them.
(c) If they have nicks, dents or scores more to 0.005 in. (0.13 mm) in depth, repair them (Ref. AMM TASK 72-31-11-300-010).
(2) Examine the rubber seals of the annulus fillers for security of attachment or seals that are not there
(a) If they are raised above the annulus line, accept them, if:
1 They are still attached to the annulus fillers.
2 They have no cracks.

NOTE: You may pick and pull up the raised seals to make sure if the seals are attached or not.

(b) If up to six separate seals are fully missing from the annulus fillers, accept them.
(c) If seals with total accumulative length not more than 61.4 in. (1.5596 m) are not fully detached from the annulus fillers, repair them (Ref. AMM TASK 72-31-11-300-015).
(d) If the seals are detached or missing more than in (b) or (c), reject them.
(e) If the seals are worn, accept them. Worn seals must be replaced at the next shop visit.
(3) Examine the front and rear trunnions of the annulus fillers for peeling of dry film lubricant.

Annulus Fillers - Dry Film Lubricant Coating Area ** ON A/C NOT FOR ALL

(a) If they have any amount of peeling of dry film lubricant, repair them at the next maintenance visit, before 36 months, 12000 Flight Hours (FH) or 8000 Flight Cycles (FC), whichever occurs first (Ref. AMM TASK 72-31-11-300-022).

5. Close-up
Subtask 72-31-11-942-079-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) Remove the MAT - WORK.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:00:43 UTC