W DOC AIRBUS | AMM A320F

Deactivation of the Pressure Relief Doors

TASK 54-52-00-040-001-A
Deactivation of the Pressure Relief Doors

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
ZONE: 410
ZONE: 420
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
1. Reason for the Job
CDL 54-03
Pylon Pressure Relief Door 413(423) BL - 414(424) BR
NOTE: If the left pressure relief door is missing, remove the right pressure relief door. If the right pressure relief is missing, remove the left pressure relief door.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
410
ENG 1 PYLON BOX AND FORWARD FAIRING
420
ENG 2 PYLON BOX AND FORWARD FAIRING
413CL, 423CL
413DL, 414CR, 423DL, 424CR
413CR, 413DT, 423CR, 423DT
 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 78-30-00-481-041-A
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B
Make the Thrust Reverser Unserviceable for Maintenance
F Pressure Relief Doors ** ON A/C NOT FOR ALL
F Pressure Relief Doors ** ON A/C NOT FOR ALL
F Pressure Relief Doors ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 54-52-00-941-053-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 engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
   (3) On overhead maintenance panel 50VU:
     (a) Make sure that the ON legend of ENG/FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) to tell persons not to energize FADEC 1(2).
Subtask 54-52-00-040-052-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 54-52-00-040-052-C ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-040-012).
Subtask 54-52-00-010-051-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
     (a) For the left pylon, in zone 410
     (b) For the right pylon, in zone 420.
   (2) Remove the access panels:
     (a) For the left pylon: 413DL 413CL and 414CR
     (b) For the right pylon: 423DL 423CL and 424CR.
Subtask 54-52-00-010-051-C ** ON A/C NOT FOR ALL
C. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
     (a) For the left pylon, in zone 410
     (b) For the right pylon, in zone 420.
   (2) Remove the access panels:
     (a) For the left pylon: 413CL 413DT and 413CR
     (b) For the right pylon: 423CL 423DT and 423CR.
Subtask 54-52-00-010-051-D ** ON A/C NOT FOR ALL
C. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
     (a) For the left pylon, in zone 410
     (b) For the right pylon, in zone 420.
   (2) Remove the access panels:
     (a) For the left pylon: 413CL 413DT and 413CR
     (b) For the right pylon: 423CL 423DT and 423CR.
4. Procedure
Subtask 54-52-00-040-053-A ** ON A/C NOT FOR ALL
A. Deactivation of the Pressure Relief Door
F Pressure Relief Doors ** ON A/C NOT FOR ALL
F Pressure Relief Doors ** ON A/C NOT FOR ALL
F Pressure Relief Doors ** ON A/C NOT FOR ALL
NOTE: The deactivation of each pressure relief door is symmetrical.
   (1) Open the pressure relief door (1) or (2).
   (2) Remove the spring (11).
   (3) Remove the cotter pins (9) and discard them.
   (4) Remove the washers (6), the pin (10) and the shims (7) and (8).
   (5) Remove the nut (5), the bolt (12) and the washer (13).
   (6) Remove the shims (14), (15), (3) and (4).
   (7) Remove the nut (21), the bolt (17) and the washers (16) and (18).
   (8) Remove the shims (19) and (20).
   (9) Remove the pressure relief door (1) or (2).
[Rev.10 from 2021] 2026.04.01 02:01:45 UTC
"Aviabrain" 2025