Removal of the Fan Case Liner Panels [IAE]

TASK 72-32-87-000-011-B
Removal of the Fan Case Liner Panels

ZONE: 400
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	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
IAE1J12187	1	COVER-PROTECTION LPC BLEED DUCT

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
Protection Cover
Positions of the Screws to attach the Fan Case Liner Panels
Positions of the Screws to attach the Fan Case Liner Panels
Fan Case Liner Panels

3. Job Set-up
Subtask 72-32-87-941-055-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a 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 a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 72-32-87-010-056-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the fan case liner panels.

Subtask 72-32-87-040-054-A ** ON A/C NOT FOR ALL

C. Deactivate the thrust reverser.

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 72-32-87-010-067-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

4. Procedure
Subtask 72-32-87-620-052-A ** ON A/C NOT FOR ALL

A. Install the IAE1J12187 COVER-PROTECTION LPC BLEED DUCT or equivalent around the bleed duct not to let unwanted material fall into the bleed duct.

Protection Cover ** ON A/C NOT FOR ALL

(1) Put the canvas of the protection cover on the upper half of the bleed duct
(2) Engage the hooks of the protection cover with the rings at the bottom position of the bleed duct to safety the protection cover.

Subtask 72-32-87-020-088-A ** ON A/C NOT FOR ALL

B. Remove the screws which attach the damaged fan case front liner panels to the fan case.

Positions of the Screws to attach the Fan Case Liner Panels ** ON A/C NOT FOR ALL

Subtask 72-32-87-020-053-A ** ON A/C NOT FOR ALL

C. Remove the fan case front liner panels.

Fan Case Liner Panels ** ON A/C NOT FOR ALL

Subtask 72-32-87-020-089-A ** ON A/C NOT FOR ALL

D. Remove the screws which attach the damaged fan case rear liner panels to the fan case.

Positions of the Screws to attach the Fan Case Liner Panels ** ON A/C NOT FOR ALL

Subtask 72-32-87-020-090-A ** ON A/C NOT FOR ALL

E. Remove the fan case rear liner panels.

Fan Case Liner Panels ** ON A/C NOT FOR ALL

[Rev.10 from 2021] 2026.04.01 02:45:48 UTC