W DOC AIRBUS | AMM A320F

General Visual Inspection of the Compressor Tubes and Duct for Signs of Delamination

TASK 21-52-00-200-807-A
General Visual Inspection of the Compressor Tubes and Duct for Signs of Delamination

WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE AN INJURY.
NOTE: This procedure is valid for the PN 1263A0000-02/-03 and for PN 1814A0000-02.
ZONE: 191
ZONE: 192
FIN: 10HM1
FIN: 11HM1
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
SAFETY CLIP - CIRCUIT BREAKER
No specific
1
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
191
AIR CONDITIONING COMPT AND FAIRINGS
192
AIR CONDITIONING COMPT AND FAIRINGS
FOR [10HM1] (MACHINE-AIR CYCLE)
191KB
FOR [11HM1] (MACHINE-AIR CYCLE)
192KB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 21-52-21-000-001-A
Removal of the Air Cycle Machine
TASK 21-52-21-000-802-A
Removal of the Compressor Tubes and Duct
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 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A
Installation of the Quick-Release Access Panels on the Belly Fairing Structure
F Compressor tubes and duct - Component Location
3. Job Set-up
Subtask 21-52-00-861-065-A
A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 21-52-00-865-088-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM1 (MACHINEAIR CYCLE)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 11HM1 (MACHINEAIR CYCLE)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-00-941-052-A
C. Safety Precautions
   (1) On the AIR COND panel 30VU make sure that:
  • The APU BLEED P/BSW is in the OFF position (the ON legend is off) and,
  • The ENGINE 1 and 2 BLEED P/BSW are in the off position (the OFF legends are on).
     (a) Put a WARNING NOTICE(S) in position to tell persons not to operate these P/BSW.
   (2) On the access door 191DB on the HP ground connector put a WARNING NOTICE(S) not to supply the ground air.
Subtask 21-52-00-010-074-A
D. Get Access
   (1) Remove the access panel (Ref. AMM TASK 53-35-13-000-002).
     (a) FOR [10HM1] (MACHINE-AIR CYCLE)
191KB,
     (b) FOR [11HM1] (MACHINE-AIR CYCLE)
192KB.
4. Procedure
Subtask 21-52-00-210-062-A
A. General Visual Inspection of the Compressor Tubes and Duct
F Compressor tubes and duct - Component Location
   (1) Do a general visual inspection of the return air tube (1), the anti icing tube (2) and the blanking duct (3) for signs of delamination or cracks.
   (2) If any of the tubes or duct is cracked or missing, replace the air cycle machine (Ref. AMM TASK 21-52-21-000-001).
   (3) If any of the tubes or duct shows signs of delamination or hardening, replace the tube or duct (Ref. AMM TASK 21-52-21-000-802).
5. Close-up
Subtask 21-52-00-865-089-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM1 (MACHINEAIR CYCLE)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 11HM1 (MACHINEAIR CYCLE)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-00-410-071-A
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access panel (Ref. AMM TASK 53-35-13-400-002).
     (a) FOR [10HM1] (MACHINE-AIR CYCLE)
191KB.
     (b) FOR [11HM1] (MACHINE-AIR CYCLE)
192KB.
   (3) Remove the WARNING NOTICE(S).
Subtask 21-52-00-862-063-A
C. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:48:39 UTC
"WTRUIB" 2025