Installation of the Pressure Relief Door

TASK 54-53-11-400-001-A
Installation of the Pressure Relief Door

ZONE: 470
ZONE: 480

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	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
470	ENGINE 1 AFT PYLON
480	ENGINE 2 AFT PYLON

C. Referenced Information

REFERENCE	DESIGNATION
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
Pressure Relief Door ** ON A/C NOT FOR ALL
Presure Relief Door ** ON A/C NOT FOR ALL
Presure Relief Door ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 54-53-11-941-058-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Make sure that a WARNING NOTICE(S) to tell persons not to start the engine is in position.
(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) Make sure that a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2) is in position .

Subtask 54-53-11-869-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the access platform is in position at the zones 470 and 480.
(2) Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 54-53-11-869-050-B ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the access platform is in position at the zones 470 and 480.
(2) Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-040-012).

4. Procedure
Subtask 54-53-11-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Pressure Relief Door

Pressure Relief Door ** ON A/C NOT FOR ALL

(1) Put the pressure relief door (2) in position.
(2) Install the washers (3), the screws (4), the nuts (7) and tighten them.
(3) Install the screws (1), the nuts (8) and tighten them.
(4) Install the panel (9).
(5) Install the washers (6), the screws (5) and tighten them.

Subtask 54-53-11-420-050-B ** ON A/C NOT FOR ALL

A. Installation of the Pressure Relief Door

Presure Relief Door ** ON A/C NOT FOR ALL

(1) Put the pressure relief door (3) in position.
(2) Install the four washers (2), the four screws (1) and tighten them.

5. Close-up
Subtask 54-53-11-440-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 54-53-11-440-050-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-440-012).

Subtask 54-53-11-942-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:02:25 UTC