Detailed Inspection of Thrust Reverser Blocker Doors and Linkages for Condition and Security (Requires Partial Manual Deployment of Thrust Reverser) [IAE]

TASK 78-32-00-200-014-A
Detailed Inspection of Thrust Reverser Blocker Doors and Linkages for Condition and Security (Requires Partial Manual Deployment of Thrust Reverser)

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

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Refer to the MPD TASK: 783200-I2
DETAILED INSPECTION OF THRUST REVERSER BLOCKER DOORS AND LINKAGES FOR CONDITION AND SECURITY (REQUIRES PARTIAL MANUAL DEPLOYMENT OF THRUST REVERSER)
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)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.14SBA1)	Textile-Lint free Cotton -

C. 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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing 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 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-31-00-710-041-A	Operational Test of the Thrust Reverser System with the CFDS
TASK 78-31-00-710-041-A-02	Operational test of the Thrust Reverser without the CFDS and Engine Running
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
TASK 78-32-00-860-010-A	Manual Extension of the Thrust Reverser Translating Sleeves
TASK 78-32-00-860-011-A	Manual Retraction of the Thrust Reverser Translating Sleeves
TASK 78-32-42-000-010-A	Removal of the Left Thrust Reverser Blocker Door Drag Links
TASK 78-32-42-400-010-A	Installation of the Left Thrust Reverser Blocker Door Drag Links
TASK 78-32-45-200-010-A	Visually Examine the Surface Damage on the Blocker Door of the Left Thrust Reverser
TASK 78-32-72-000-010-A	Removal of the Right Blocker Door Link Assembly
TASK 78-32-72-400-010-A	Installation of the Right Blocker Door Link Assembly
TASK 78-32-75-200-010-A	Visually Examine the Surface Damage on the Blocker Door of the Right Thrust Reverser
Thrust Reverser Blocker Doors and Links

3. Job Set-up
Subtask 78-32-00-941-056-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 78-32-00-010-066-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.

Subtask 78-32-00-040-057-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 78-32-00-980-056-A ** ON A/C NOT FOR ALL

D. Manually extend the thrust reverser translating sleeves (Ref. AMM TASK 78-32-00-860-010).

Subtask 78-32-00-020-056-A ** ON A/C NOT FOR ALL

E. Disconnection of the Blocker Door Drag Link
(1) Disconnect blocker door drag link from the fitting on the inner fixed structure (Ref. AMM TASK 78-32-42-000-010) and (Ref. AMM TASK 78-32-72-000-010).

Subtask 78-32-00-110-051-A ** ON A/C NOT FOR ALL

F. Clean the Thrust Reverser Components
(1) Clean the thrust reverser components that follow with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with cleaning fluid (Material No.V01-002)

Thrust Reverser Blocker Doors and Links ** ON A/C NOT FOR ALL

(a) Blocker doors (3).
(b) Blocker door links (2).
(c) Translating sleeve blocker door hinges (1).
(d) Thrust reverser blocker door pivot fittings (4).

4. Procedure
Subtask 78-32-00-210-053-A ** ON A/C NOT FOR ALL

A. Examine the blocker doors and links.

Thrust Reverser Blocker Doors and Links ** ON A/C NOT FOR ALL

(1) Examine the blocker doors (3) for cracks, wear or other obvious damage, or for loose or missing fasteners (Ref. AMM TASK 78-32-45-200-010) and (Ref. AMM TASK 78-32-75-200-010).
(2) Examine the translating sleeve blocker door hinges (1) for cracks, wear or other obvious damage, or for loose or missing fasteners.
(3) Examine the thrust reverser blocker door pivot fittings (4) for cracks, wear or other obvious damage, or for loose or missing fasteners.
(4) Examine the blocker door links (2) for cracks, wear or other obvious damage, or for loose or missing fasteners.
(5) Rotate the blocker door and the blocker door links for signs of excessive stiffness or wear through their full range of motion. Reject the blocker door or the blocker door links if there are signs of excessive stiffness or wear.
(6) Hold and shake the blocker door (3) for signs of blocker door hinge (1) looseness. If the blocker door and hinge attachments are not properly secured or show signs of wear, reject the blocker door and the hinge attachments.
(7) Connect the blocker door link to the fitting on the inner fixed structure (Ref. AMM TASK 78-32-42-400-010) and (Ref. AMM TASK 78-32-72-400-010).

5. Close-up
Subtask 78-32-00-410-086-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) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL, 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL, 462AR.

Subtask 78-32-00-980-053-A ** ON A/C NOT FOR ALL

B. Manually retract the translating sleeves (Ref. AMM TASK 78-32-00-860-011).

Subtask 78-32-00-440-055-A ** ON A/C NOT FOR ALL

C. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 78-32-00-410-064-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 78-32-00-710-054-A ** ON A/C NOT FOR ALL

E. Do an operational test:
(1) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-041)

NOTE: As an alternative procedure you can do operational test without the CFDS (Ref. AMM TASK 78-31-00-710-041).

[Rev.10 from 2021] 2026.04.01 03:56:12 UTC