Deactivation of the Thrust Reverser with one Blocker Door missing [IAE]

TASK 78-32-00-040-011-A
Deactivation of the Thrust Reverser with one Blocker Door missing

1. Reason for the Job
CDL 78-03
Thrust Reverser Blocker Door
(old CDL reference: 78-3)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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 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 78-30-00-040-013-A	Deactivation of the Thrust Reverser System for Flight
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
TASK 78-32-42-000-010-A	Removal of the Left Thrust Reverser Blocker Door Drag Links
TASK 78-32-45-000-010-A	Removal of the Left Thrust Reverser Blocker Doors
TASK 78-32-72-000-010-A	Removal of the Right Blocker Door Link Assembly
TASK 78-32-75-000-010-A	Removal of the Right Thrust Reverser Blocker Doors

3. Job Set-up
Subtask 78-32-00-941-070-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 78-32-00-010-085-A ** ON A/C NOT FOR ALL

B. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 78-32-00-040-065-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 78-32-00-010-086-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 78-32-00-040-066-A ** ON A/C NOT FOR ALL

A. Deactivation of the Thrust Reverser with one blocker door missing.
(1) Remove the blocker door (Ref. AMM TASK 78-32-45-000-010) or (Ref. AMM TASK 78-32-75-000-010).
(2) Remove the blocker door link assembly (Ref. AMM TASK 78-32-42-000-010) or (Ref. AMM TASK 78-32-72-000-010).

5. Close-up
Subtask 78-32-00-410-083-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 left thrust reverser half (Ref. AMM TASK 78-32-00-410-010).
(a) FOR [1000EM1] (ENGINE-1)
451AL.
(b) FOR [1000EM2] (ENGINE-2)
461AL.

Subtask 78-32-00-440-063-A ** ON A/C NOT FOR ALL

B. Activate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-440-012).

Subtask 78-32-00-440-064-A ** ON A/C NOT FOR ALL

C. Make the Thrust Reverser unserviceable for flight (Ref. AMM TASK 78-30-00-040-013).

Subtask 78-32-00-410-084-A ** ON A/C NOT FOR ALL

D. Close Access
(1) 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.
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:27:52 UTC