W DOC AIRBUS | AMM A320F

Visual Inspection of the Bleed-Air Duct System After the Damage of APU Inlet Guide Vane

TASK 36-11-00-210-802-A
Visual Inspection of the Bleed-Air Duct System After the Damage of APU Inlet Guide Vane

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
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.
ZONE: 191
ZONE: 400
ZONE: 811
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
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
191
AIR CONDITIONING COMPT AND FAIRINGS
400
POWER PLANT, NACELLES AND PYLONS
811
FORWARD AVIONICS COMPARTMENT DOOR
811
 C. 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 36-11-00-710-803-A
Operational Test of the Bleed Air System
TASK 36-22-00-790-803-A
Leak Check on all the Bleed Air Ducts and the Pack Components
TASK 52-41-00-010-002-A
Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A
Close the Avionics Compartment Doors after Access
F Bleed-Air Duct System with Valves and Ducts - Location and Detail
FOR [5HA1]
FOR [5HA2]
TASK 36-11-53-000-803-A
Removal of the Overpressure Valve
TASK 36-11-53-400-803-A
Installation of the Overpressure Valve
FOR [6HV] (CROSSBLEED VALVE)
TASK 36-12-52-000-001-A
Removal of the Crossbleed Valve
TASK 36-12-52-400-001-A
Installation of the Crossbleed Valve
FOR [7150HM]
TASK 36-11-42-000-804-A
Removal of the Bleed-Air Precooler Exchanger
TASK 36-11-42-400-804-A
Installation of the Bleed-Air Precooler Exchanger
FOR [7260HM] (CHECK VALVE-APU BLEED)
TASK 36-12-51-000-001-A
Removal of the APU Bleed Check-Valve
TASK 36-12-51-400-001-A
Installation of the APU Bleed Check-Valve
FOR [7270HM] (CHECKVALVE-PRESS.SERVICE)
FOR [7272HM] (CHECKVALVE-PRESS.SERVICE)
TASK 36-11-56-000-001-A
Removal of the Pressure Service Check-Valve
TASK 36-11-56-400-001-A
Installation of the Pressure Service Check-Valve
FOR [7300HM] (HP GROUND-CONNECTOR)
TASK 36-13-41-000-001-A
Removal of the HP Ground Connector
TASK 36-13-41-400-001-A
Installation of the HP Ground Connector
3. Job Set-up
Subtask 36-11-00-861-193-A
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 36-11-00-941-182-A
B. Safety Precautions
   (1) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
   (2) On AIR COND control panel 30VU:
  • Make sure that the ENG 1(2) BLEED pushbutton-switch is released (the OFF legend is on)
  • Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off)
  • Put a WARNING NOTICE(S) in position to tell persons not to operate the pneumatic system.
   (3) On ENG control panel 115VU:
  • Put a WARNING NOTICE(S) in position to tell persons not to start the engine 1(2).
   (4) On APU panel 25VU:
     (a) Make sure that the FAULT and ON legends in pushbutton switch MASTER SW are off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to start the APU.
   (5) On the HP ground connector:
  • Put a WARNING NOTICE(S) in position to tell persons not to pressurize the pneumatic system.
   (6) On the ENG section of maintenance panel 50VU:
  • Make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton-switch is off
  • Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
Subtask 36-11-00-010-256-A
C. Get Access
   (1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below access door 811.
   (2) Open access door 811 (Ref. AMM TASK 52-41-00-010-002).
   (3) Put a WARNING NOTICE(S) in position to tell persons not to close access door 811.
Subtask 36-11-00-865-201-A
D. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUAIR BLEED/ENG 1/CTL2HA1D11
122VUAIR BLEED/ENG 1/MONG3HA1Z23
122VUAIR BLEED/X FEED VALVE/NORM1HVZ20
FOR FIN: 1000EM2 (ENGINE2)
49VUAIR BLEED/X FEED/VALVE/BAT2HVD13
49VUAIR BLEED/ENG 2/MONG3HA2D12
122VUAIR BLEED/ENG 2/CTL2HA2Z22
4. Procedure
Subtask 36-11-00-210-060-A
A. Visual Inspection of the Bleed-Air Duct System
   (1) FOR [7260HM] (CHECK VALVE-APU BLEED)
     (a) Remove the APU bleed check-valve (Ref. AMM TASK 36-12-51-000-001).
     (b) Visually inspect the APU bleed check-valve for any sign of Foreign Object Damage (FOD):
  • Scratches, dents and missing segments
  • Signs and impacts.
     (c) If any of the above signs are found:
     (d) If any of the above signs are not found:
   (2) FOR [6HV] (CROSSBLEED VALVE)
     (a) Remove the crossbleed valve (Ref. AMM TASK 36-12-52-000-001).
     (b) Visually inspect the crossbleed valve for any sign of FOD:
  • Scratches, dents and missing segments
  • Signs and impacts.
     (c) If any of the above signs are found:
     (d) If any of the above signs are not found:
   (3) FOR [7150HM]
     (a) Remove bleed-air precooler exchanger 7150HM1 (7150HM2) (Ref. AMM TASK 36-11-42-000-804).
     (b) Visually inspect the bleed-air precooler exchanger for any sign of FOD:
  • Scratches, dents and missing segments
  • Signs and impacts.
     (c) If any of the above signs are found:
     (d) If any of the above signs are not found:
   (4) FOR [7300HM] (HP GROUND-CONNECTOR)
     (a) Remove the HP ground connector (Ref. AMM TASK 36-13-41-000-001).
     (b) Visually inspect the HP ground connector for any sign of FOD:
  • Scratches, dents and missing segments
  • Signs and impacts.
     (c) If any of the above signs are found:
     (d) If any of the above signs are not found:
   (5) FOR [5HA1] , [5HA2]
     (a) Remove the overpressure valve (Ref. AMM TASK 36-11-53-000-803).
     (b) Visually inspect the overpressure valve for any sign of FOD:
  • Scratches, dents and missing segments
  • Signs and impacts.
     (c) If any of the above signs are found:
     (d) If any of the above signs are not found:
   (6) FOR [7270HM] (CHECKVALVE-PRESS.SERVICE), [7272HM] (CHECKVALVE-PRESS.SERVICE)
     (a) Remove the pressure service check-valve (Ref. AMM TASK 36-11-56-000-001).
     (b) Visually inspect the pressure service check-valve for any sign of FOD:
  • Scratches, dents and missing segments
  • Signs and impacts.
     (c) If any of the above signs are found:
     (d) If any of the above signs are not found:
5. Close-up
Subtask 36-11-00-865-202-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUAIR BLEED/ENG 1/CTL2HA1D11
122VUAIR BLEED/ENG 1/MONG3HA1Z23
122VUAIR BLEED/X FEED VALVE/NORM1HVZ20
FOR FIN: 1000EM2 (ENGINE2)
49VUAIR BLEED/X FEED/VALVE/BAT2HVD13
49VUAIR BLEED/ENG 2/MONG3HA2D12
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 36-11-00-710-062-A
B. Operational Test
   (1) Do an operational test of the bleed-air duct system (excluding PRV and HPV) (Ref. AMM TASK 36-11-00-710-803).
Subtask 36-11-00-790-075-A
C. Leak Test
   (1) Do a leak test of the bleed-air duct system (Ref. AMM TASK 36-22-00-790-803). No leaks are permitted.
Subtask 36-11-00-410-254-A
D. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the WARNING NOTICE(S).
   (3) Close access door 811 (Ref. AMM TASK 52-41-00-410-002).
   (4) Remove the access platform(s).
Subtask 36-11-00-862-175-A
E. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 01:08:03 UTC
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