DOC AIRBUS | AMM A320FOperational Test of the Manual Release Mechanism for the Passenger Emergency Oxygen-System Masks
TASK 35-23-00-710-002-A
Operational Test of the Manual Release Mechanism for the Passenger Emergency Oxygen-System Masks
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 35-23-00-861-052-A
Subtask 35-23-00-420-053-A
Subtask 35-23-00-865-053-A
[Rev.10 from 2021]
2026.04.01 06:18:04 UTC
Operational Test of the Manual Release Mechanism for the Passenger Emergency Oxygen-System Masks
WARNING:
KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.
WARNING:
CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT CONTAMINATION OF THE OXYGEN SYSTEM.
ZONE: 200
1. Reason for the JobSelf 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 | AR | WARNING NOTICE(S) |
| 995000-00 | 1 | TOOL-MANUAL RELEASE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 200 | UPPER HALF FUSELAGE |
| REFERENCE | DESIGNATION |
|---|---|
| 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 35-00-00-860-001-A | Special Precautions When Working on a Gaseous Oxygen System |
Manual Mask ReleaseSubtask 35-23-00-861-052-A
A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you do work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(3) In the cockpit, on the OXYGEN section of overhead panel 21VU:
(a) Put a(the) WARNING NOTICE(S) in position to tell persons not to operate the emergency oxygen system.
Subtask 35-23-00-865-052-A (1) Obey the special precautions when you do work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(3) In the cockpit, on the OXYGEN section of overhead panel 21VU:
(a) Put a(the) WARNING NOTICE(S) in position to tell persons not to operate the emergency oxygen system.
B. Open, safety and tag this(these) circuit breaker(s):
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | OXYGEN/PASSENGER/ACTUATION | 7WR | HA08 |
| 49VU | OXYGEN/PASSENGER/ACTUATION | 6WR | HA07 |
| 49VU | OXYGEN/PASSENGER/ACTUATION | 5WR | HA06 |
| 49VU | OXYGEN/PASSENGER/ACTUATION | 4WR | HA05 |
| 49VU | OXYGEN/PASSENGER/CTL AND WARN | 3WR | HA04 |
| 49VU | OXYGEN/PASSENGER/CTL AND WARN | 2WR | HA03 |
| 49VU | OXYGEN/PASSENGER/CTL AND WARN | 1WR | HA02 |
Subtask 35-23-00-420-053-A
A. Aircraft Maintenance Configuration
(1) On all emergency oxygen containers, do step (a) and/or step (b) as applicable:
(a) Pull out the test button with your fingers. Then turn it 90 degrees to the TEST position.
(b) Push the left side of the test button on the door assembly.
(a) Put the 995000-00 TOOL-MANUAL RELEASE into the access hole in the oxygen container door.
(b) Push the tool in until the latch is released. The door opens to the maximum travel permitted for the test.
(c) Close the door of the emergency oxygen containers:
2 Push the door of the emergency oxygen container, at the both sides of the test button, to lock the latch mechanism.
3 Make sure that the door is flush with the adjacent panels.
(4) On all emergency oxygen containers, do step (a) and/or step (b) as applicable:
(a) Turn the test buttons 90 degrees to the normal position.
(b) Push the test buttons back to the normal position and let them retract into their containers.
(6) Make sure that the work area is clean and clear of tools and other items.
5. Close-up(1) On all emergency oxygen containers, do step (a) and/or step (b) as applicable:
(a) Pull out the test button with your fingers. Then turn it 90 degrees to the TEST position.
(b) Push the left side of the test button on the door assembly.
NOTE: The over-center spring keeps the lever of the test button at 90 degrees to the door surface. The lever of the test button must stay in this position until you set it manually back to the initial position.
(2) Remove the 995000-00 TOOL-MANUAL RELEASE from its stowage position. NOTE: It is permitted to use alternative tool P/N 995000.
(3) Do the steps (a) thru (c) for each oxygen container: (a) Put the 995000-00 TOOL-MANUAL RELEASE into the access hole in the oxygen container door.
(b) Push the tool in until the latch is released. The door opens to the maximum travel permitted for the test.
(c) Close the door of the emergency oxygen containers:
CAUTION:
DO NOT USE TOO MUCH FORCE TO CLOSE THE EMERGENCY OXYGEN CONTAINER. IF YOU USE TOO MUCH FORCE, YOU CAN CAUSE DAMAGE TO THE LATCH MECHANISM. IF THE LATCH MECHANISM DOES NOT ENGAGE EASILY, MAKE SURE THAT THE EQUIPMENT IN THE EMERGENCY OXYGEN CONTAINER IS CORRECTLY INSTALLED.
1 Push the door of the emergency oxygen container to the closed position. 2 Push the door of the emergency oxygen container, at the both sides of the test button, to lock the latch mechanism.
3 Make sure that the door is flush with the adjacent panels.
(4) On all emergency oxygen containers, do step (a) and/or step (b) as applicable:
(a) Turn the test buttons 90 degrees to the normal position.
NOTE: Spring tension will retract the test buttons when they are in the normal position.
(b) Push the test buttons back to the normal position and let them retract into their containers.
NOTE: Spring tension retracts the test buttons automatically when they are in the normal position.
(5) Put the 995000-00 TOOL-MANUAL RELEASE in its stowage position. (6) Make sure that the work area is clean and clear of tools and other items.
Subtask 35-23-00-865-053-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 35-23-00-862-054-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | OXYGEN/PASSENGER/ACTUATION | 7WR | HA08 |
| 49VU | OXYGEN/PASSENGER/ACTUATION | 6WR | HA07 |
| 49VU | OXYGEN/PASSENGER/ACTUATION | 5WR | HA06 |
| 49VU | OXYGEN/PASSENGER/ACTUATION | 4WR | HA05 |
| 49VU | OXYGEN/PASSENGER/CTL AND WARN | 3WR | HA04 |
| 49VU | OXYGEN/PASSENGER/CTL AND WARN | 2WR | HA03 |
| 49VU | OXYGEN/PASSENGER/CTL AND WARN | 1WR | HA02 |
B. Put the aircraft back to its initial configuration.
(1) In the cockpit, on the OXYGEN section of overhead panel 21VU:
(a) Remove the WARNING NOTICE(S).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(1) In the cockpit, on the OXYGEN section of overhead panel 21VU:
(a) Remove the WARNING NOTICE(S).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).