W DOC AIRBUS | AMM A320F

Removal of the Thermal Blankets between RIB1 and RIB5

TASK 54-51-61-000-802-A
Removal of the Thermal Blankets between RIB1 and RIB5

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: 4020KM1
FIN: 4020KM2
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
ACCESS PLATFORM 2M (6 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
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 26-12-16-000-804-A
Removal of the Pylon Fire-Detector Ramp-Assembly
TASK 71-13-00-010-803-A
Opening of the Fan Cowl Doors
TASK 78-30-00-040-807-A
Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-36-00-010-806-A
Opening of the Thrust Reverser Cowl Doors
F Thermal Blankets between RIB1 and RIB5
3. Job Set-up
Subtask 54-51-61-941-052-A
A. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
     (c) Put a WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
   (2) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 54-51-61-040-052-A
B. Deactivation of the Thrust Reverser
WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.
   (1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-807).
Subtask 54-51-61-010-051-A
C. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
   (2) Open the thrust-reverser cowl doors (Ref. AMM TASK 78-36-00-010-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR.
   (3) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position:
     (a) For the left pylon, in zone 415
     (b) For the right pylon, in zone 425.
4. Procedure
Subtask 54-51-61-020-051-A
A. Removal of the Thermal Blanket between RIB1 and RIB5
F Thermal Blankets between RIB1 and RIB5
   (1) Make match marks on all applicable pipes before you disconnect them.
   (2) Disconnect the applicable pipes (2), (4), (6) and (12) from the left pylon. To do this:
     (a) Loosen the nuts (1), (3), (5) and (13).
     (b) Disconnect the pipes (2), (4), (6) and (12).
     (c) Put the blanking plugs on the disconnected pipe end.
   (3) Disconnect the applicable pipes (15), (17) and (18) from right pylon. To do this:
     (a) Loosen the nuts (14). (16) and (19).
     (b) Disconnect the pipes (15), (17) and (18).
     (c) Put the blanking plugs on the disconnected pipe end.
   (4) Remove the engine fire-extinguishing pipe (8) from its connection. To do this:
     (a) Loosen the nut (7).
     (b) Disconnect the engine fire-extinguishing pipe (8).
     (c) Remove the screws (10) and the washers (9).
     (d) Remove the engine fire-extinguishing pipe (8).
     (e) Put the blanking plugs on the disconnected pipe end.
   (5) Remove the pylon fire-detector ramp-assembly (Ref. AMM TASK 26-12-16-000-804).
   (6) Hold the thermal blankets (24), (23) and (20).
   (7) Remove the bolts (22) and the washers (21).
   (8) Remove the thermal blankets (24), (23) and (20).
[Rev.10 from 2021] 2026.04.01 06:43:31 UTC
"Aviabrain" 2025