W DOC AIRBUS | AMM A320F

Check of the Integrated Impact Wall for Permissible Damage

TASK 28-28-00-040-006-A
Check of the Integrated Impact Wall for Permissible Damage

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
Task Summary
Access Test Specific Tools Mhr E/T Nb Men
NONONO1.01.01
1. Reason for the Job
MMEL 28-28-08A
ACT INTEGRATED IMPACT WALL
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
2
WARNING NOTICE(S)
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-11-49-000-001-A
Removal of the ACT Integrated Impact Wall
TASK 28-11-49-000-002-A
Removal of the Additional Center Tank (ACT) Integrated Impact Wall
TASK 28-11-49-400-001-A
Installation of the ACT Integrated Impact Wall
TASK 28-11-49-400-002-A
Installation of the Additional Center Tank (ACT) Integrated Impact Wall
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
F Location of the Attachment Points ** ON A/C NOT FOR ALL
F Location of the Attachment Points ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 28-28-00-860-092-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
   (2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (3) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
   (4) Put an ACCESS PLATFORM 2M (6 FT) in position at the opening of the aft cargo-compartment.
   (5) Put a WARNING NOTICE(S) in position on:
  • Refuel/defuel control panel 801VU
  • Fuel control panel 40VU
  • Additional Center Tank (ACT) control panel 28VU
    to tell persons not to operate the refuel/defuel system.
Subtask 28-28-00-865-072-A ** ON A/C NOT FOR ALL
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUFUEL/HI/LVL/SPLY1QJL25
121VUFUEL/RFL/DFL/SPLY2QUL24
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL23
121VUACT PUMP SUPPLY25QHQ29
** ON A/C NOT FOR ALL
121VUFUEL/ACT AIR SOV/MAN/SPLY64QHJ20
121VUFUEL/ACT AIR SOV/AUTO/SPLY63QHJ19
121VUFUEL/ACT XFR VLV/MOT266QHJ18
121VUFUEL/ACT XFR VLV/MOT165QHJ17
121VUFUEL/HI/LVL/SPLY1QJL24
121VUFUEL/RFL/DFL/SPLY2QUL23
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL22
121VUFUEL/ACT VENT VLV/MAN/SPLY62QHL21
121VUFUEL/ACT VENT VLV/AUTO/SPLY61QHL20
121VUFUEL/ACT/FUEL PUMP/SPLY25QHQ29
Subtask 28-28-00-010-063-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Remove the Integrated Impact Wall (Ref. AMM TASK 28-11-49-000-001).
NOTE: The removal is not necessary if three 'Y' attachments points of the protection cover of the Integrated Impact Wall is damaged, see the procedure below.
Subtask 28-28-00-010-063-B ** ON A/C NOT FOR ALL
C. Get Access
   (1) Remove the applicable integrated impact wall (Ref. AMM TASK 28-11-49-000-002).
NOTE: The removal is not necessary if three 'Y' attachments points of the protection cover of the integrated impact wall is damaged, see the procedure below.
4. Procedure
Subtask 28-28-00-040-055-A ** ON A/C NOT FOR ALL
A. Do a check for Permissible Damage of the Integrated Impact Wall
NOTE: The Integrated Impact Wall has a protection cover and a heat shield which are assembled together.
CAUTION : DAMAGE TO THE HEAT SHIELD IS NOT PERMITTED.
   (1) Damage Limits - Protection Cover
     (a) At least three of the 'Y' attachment points must not be damaged, then you can
  • dispatch the aircraft in the subsequent conditions:
  • the placards must be visible,
  • you must do a repair procedure as soon as possible.
     (b) Dispatch is possible with all the 'Y' attachment points damaged in the subsequent conditions:
  • you must remove the remaining protection cover,
  • you must install the heat shield with new spacers,
  • you must do a repair procedure as soon as possible,
  • the placards must be visible.
   (2) Damage Limits - Heat Shield
     (a) Major or minor damage to the front surface of the heat shield:
NOTE: The protection cover must be removed before you can inspect the heat shield.
     (b) Major or minor damage to the rear profiled surface of the wall:
Subtask 28-28-00-040-055-B ** ON A/C NOT FOR ALL
CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE HEAT SHIELD. DAMAGE TO THE HEAT SHIELD IS NOT PERMITTED.
A. Do a check for Permissible Damage of the Integrated Impact Wall
NOTE: The integrated impact wall has a protection cover and a heat shield which are assembled together.
   (1) Damage Limits - Protection Cover
     (a) At least three of the 'Y' attachment points must not be damaged, then you can
  • Dispatch the aircraft in the subsequent conditions:
  • The placards must be visible
  • You must do a repair procedure as soon as possible.
     (b) Dispatch is possible with all the 'Y' attachment points damaged in the subsequent conditions:
  • You must remove the remaining protection cover
  • You must install the heat shield with new spacers
  • You must do a repair procedure as soon as possible
  • The placards must be visible.
   (2) Damage Limits - Heat Shield
     (a) Major or minor damage to the front surface of the heat shield:
NOTE: The protection cover must be removed before you can inspect the heat shield.
     (b) Major or minor damage to the rear profiled surface of the wall:
5. Close-up
Subtask 28-28-00-865-073-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUFUEL/HI/LVL/SPLY1QJL25
121VUFUEL/RFL/DFL/SPLY2QUL24
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL23
121VUACT PUMP SUPPLY25QHQ29
** ON A/C NOT FOR ALL
121VUFUEL/ACT AIR SOV/MAN/SPLY64QHJ20
121VUFUEL/ACT AIR SOV/AUTO/SPLY63QHJ19
121VUFUEL/ACT XFR VLV/MOT266QHJ18
121VUFUEL/ACT XFR VLV/MOT165QHJ17
121VUFUEL/HI/LVL/SPLY1QJL24
121VUFUEL/RFL/DFL/SPLY2QUL23
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL22
121VUFUEL/ACT VENT VLV/MAN/SPLY62QHL21
121VUFUEL/ACT VENT VLV/AUTO/SPLY61QHL20
121VUFUEL/ACT/FUEL PUMP/SPLY25QHQ29
Subtask 28-28-00-860-093-A ** ON A/C NOT FOR ALL
B. Put the aircraft back to the serviceable condition.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the integrated impact wall (Ref. AMM TASK 28-11-49-400-001).
   (3) Remove the access platform(s).
   (4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
   (5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
   (6) Remove the WARNING NOTICE(S).
   (7) If you have done restrictions to the Integrated Impact Wall:
     (a) Put a WARNING NOTICE(S) in position in the cockpit to tell these actions to the flight crew.
     (b) Make an entry in the logbook.
Subtask 28-28-00-860-093-C ** ON A/C NOT FOR ALL
B. Put the aircraft back to the serviceable condition.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the integrated impact wall (Ref. AMM TASK 28-11-49-400-002).
   (3) Remove the access platform(s).
   (4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
   (5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
   (6) Remove the WARNING NOTICE(S).
   (7) If you have done restrictions to the integrated impact wall:
     (a) Put a WARNING NOTICE(S) in position in the cockpit to tell these actions to the flight crew.
     (b) Make an entry in the logbook.
[Rev.10 from 2021] 2026.04.02 06:17:49 UTC
"WTRUIB" 2025