Activation of the Thrust Reverser System for Flight [IAE]

TASK 78-30-00-440-013-A
Activation of the Thrust Reverser System for Flight

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.

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

ZONE: 400
FIN: 4101KS1 ** ON A/C NOT FOR ALL
FIN: 4101KS2 ** ON A/C NOT FOR ALL

1. Reason for the Job
MMEL 78-30-01A
THRUST REVERSER
This procedure supplies the data to put the thrust reverser system back in operation.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT)
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-076)	Methyl Ethyl Ketone, Technical grade
(Material No.V10-078)	anti-seize compound
(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
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

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 73-22-00-860-010-A	Change of the Inhibition Status of the Thrust Reverser System
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
Hydraulic Control Unit
Thrust Reverser Lockout
Thrust Reverser Lockout

3. Job Set-up
Subtask 78-30-00-941-059-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 78-30-00-010-059-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) in position.

Subtask 78-30-00-040-058-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser HCU

Hydraulic Control Unit ** ON A/C NOT FOR ALL

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) Make sure that:

the lockout lever (3) of the HCU (1) is in the lockout position.
the storage lockout pin (2) is put in the lockout hole of the HCU.

4. Procedure
Subtask 78-30-00-440-055-A ** ON A/C NOT FOR ALL

A. Unlock the Left and Right Translating Sleeves

Thrust Reverser Lockout ** ON A/C NOT FOR ALL

(1) Remove the plug (18) from the pin stowage bracket assembly (17) on the outside of each translating sleeve (14).
(2) Remove the lockout pin (16) from the lockout assembly (15) on the outside of each translating sleeve.
(3) Clean components:
(a) Clean the lockout pin (16) and the plug (18) with V01-076Methyl Ethyl Ketone, Technical grade. Wipe dry with a Textile-Lint free Cotton - (Material No.14SBA1) before the methylethylketone evaporates,
(b) Apply anti-seize compound (Material No.V10-078) to the lockout pin (16) and the plug (18).
(4) Install the lockout pin (16) in the pin stowage bracket assembly (17).
(5) Install the plug (18) in the lockout assembly (15) on the outside of each translating sleeve.
(6) Make sure that all the plugs and the lockout pins are aligned with the translating sleeve surfaces.

Subtask 78-30-00-440-056-A ** ON A/C NOT FOR ALL

B. Activate the Hydraulic Control Unit

Hydraulic Control Unit ** ON A/C NOT FOR ALL

(1) Remove the storage lockout pin (2) from the HCU (1) and let the lock lever (3) go back to the unlock position.
(2) Make sure that the lock lever (3) goes back to its full normal position.

Subtask 78-30-00-860-060-A ** ON A/C NOT FOR ALL

C. Change the inhibition status of the thrust reverser system from INHIBITED to NOT INHIBITED (POST SBE 73-0222 only) (Ref. AMM TASK 73-22-00-860-010).

5. Close-up
Subtask 78-30-00-410-058-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 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 78-30-00-710-074-A ** ON A/C NOT FOR ALL

B. Operational Test
(1) Do the operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-041).

NOTE: As an alternative procedure, you can do the operational test without the centralized fault display system:

The method with the engine running (Ref. AMM TASK 78-31-00-710-041).

[Rev.10 from 2021] 2026.04.01 07:27:27 UTC