DOC AIRBUS | AMM A320FClean Cockpit Air Supply Ducting Grid
TASK 21-21-49-100-001-A
Clean Cockpit Air Supply Ducting Grid
Refer to the MPD TASK: 212100-01
CLEAN COCKPIT AIR SUPPLY DUCTING GRID
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 21-21-49-861-050-A Subtask 21-21-49-010-050-A ** ON A/C NOT FOR ALL
Subtask 21-21-49-020-050-A
Subtask 21-21-49-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:10:55 UTC
Clean Cockpit Air Supply Ducting Grid
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 131
1. Reason for the JobRefer to the MPD TASK: 212100-01
CLEAN COCKPIT AIR SUPPLY DUCTING GRID
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 131 | FORWARD CARGO COMPARTMENT |
| 825 | |
| 131MW | |
| 131SW | |
| 131PW |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-33-21-618-001-A | Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Available) |
| TASK 12-33-21-618-001-A-01 | Pre-conditioning through the HP Ground Connection |
| TASK 12-33-21-618-001-A-02 | Pre-conditioning with the APU |
| TASK 12-33-21-618-002-A | Pre-conditioning through the Low Pressure SUBFREEZING PCA GROUND-AIR SUPPLY |
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 25-54-12-000-001-A | Removal of the Forward Cargo-Compartment Partition |
| TASK 25-54-12-000-003-A | Removal of the Sidewall Panels in the Forward Cargo Compartment |
| TASK 25-54-12-400-001-A | Installation of the Forward Cargo-Compartment Partition |
| TASK 25-54-12-400-003-A | Installation of the Sidewall Panels in the Forward Cargo Compartment |
| 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 |
Cockpit Air Supply Duct GridSubtask 21-21-49-861-050-A Subtask 21-21-49-010-050-A ** ON A/C NOT FOR ALL
B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove access panel 131MW (Ref. AMM TASK 25-54-12-000-003).
Subtask 21-21-49-010-050-B ** ON A/C NOT FOR ALL (1) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove access panel 131MW (Ref. AMM TASK 25-54-12-000-003).
B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the sidewall panel 131SW (Ref. AMM TASK 25-54-12-000-003).
Subtask 21-21-49-010-050-D ** ON A/C NOT FOR ALL (1) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the sidewall panel 131SW (Ref. AMM TASK 25-54-12-000-003).
B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove access panel 131PW (Ref. AMM TASK 25-54-12-000-001).
4. Procedure(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove access panel 131PW (Ref. AMM TASK 25-54-12-000-001).
Subtask 21-21-49-020-050-A
A. Removal of the Duct
(1) Remove the clamps (2).
(2) Remove the duct (1).
Subtask 21-21-49-110-050-A (1) Remove the clamps (2).
(2) Remove the duct (1).
B. Clean the grid
(1) Clean the grid (3) with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
Subtask 21-21-49-420-050-A (1) Clean the grid (3) with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
C. Installation of the Duct
(1) Install the duct (1).
(2) Install the clamps (2).
Subtask 21-21-49-710-050-A (1) Install the duct (1).
(2) Install the clamps (2).
D. Test(s)
(1) Do the pre-conditioning through the LP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Do the pre-conditioning through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Do the pre-conditioning through the APU (Ref. AMM TASK 12-33-21-618-001).
or
Do the pre-conditioning through the LP SUBFREEZING PCA GROUND-AIR SUPPLY (Ref. AMM TASK 12-33-21-618-002).
(2) Do the leak check of the duct connections.
(3) Make sure that there are no leaks.
(4) Stop the pre-conditioning through the LP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Stop the pre-conditioning through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Stop the pre-conditioning through the APU (Ref. AMM TASK 12-33-21-618-001).
or
Stop the pre-conditioning through the LP SUBFREEZING PCA GROUND-AIR SUPPLY (Ref. AMM TASK 12-33-21-618-002).
5. Close-up(1) Do the pre-conditioning through the LP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Do the pre-conditioning through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Do the pre-conditioning through the APU (Ref. AMM TASK 12-33-21-618-001).
or
Do the pre-conditioning through the LP SUBFREEZING PCA GROUND-AIR SUPPLY (Ref. AMM TASK 12-33-21-618-002).
(2) Do the leak check of the duct connections.
(3) Make sure that there are no leaks.
(4) Stop the pre-conditioning through the LP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Stop the pre-conditioning through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
or
Stop the pre-conditioning through the APU (Ref. AMM TASK 12-33-21-618-001).
or
Stop the pre-conditioning through the LP SUBFREEZING PCA GROUND-AIR SUPPLY (Ref. AMM TASK 12-33-21-618-002).
Subtask 21-21-49-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 131MW (Ref. AMM TASK 25-54-12-400-003).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
Subtask 21-21-49-410-050-B ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 131MW (Ref. AMM TASK 25-54-12-400-003).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 131SW (Ref. AMM TASK 25-54-12-400-003).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
Subtask 21-21-49-410-050-D ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 131SW (Ref. AMM TASK 25-54-12-400-003).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 131PW (Ref. AMM TASK 25-54-12-400-001).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
Subtask 21-21-49-862-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 131PW (Ref. AMM TASK 25-54-12-400-001).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).