DOC AIRBUS | AMM A320FRemoval of the Oxygen Mask
TASK 35-21-43-000-001-A
Removal of the Oxygen Mask
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 35-21-43-861-050-A
Subtask 35-21-43-020-050-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 07:16:26 UTC
Removal of the Oxygen Mask
WARNING:
UNEXPENDED OXYGEN GENERATORS CONTAIN A PYROTECHNIC- ACTIVATED IGNITION DEVICE. ENSURE THAT RELEASE PIN/OR SAFETY PIN WITH WARNING FLAG IS INSTALLED DURING HANDLING AND TRANSPORTATION. IF RELEASE PIN AND/OR SAFETY PIN IS PULLED AND GENERATOR FIRES, IMMEDIATELY PLACE ON A NON-COMBUSTIBLE SURFACE. CONTAINER SURFACE TEMPERATURES MAY EXCEED 450F. ALLOW 2 TO 3 HOURS COOLING TIME BEFORE HANDLING CONTAINERS.
WARNING:
CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT CONTAMINATION OF THE OXYGEN SYSTEM.
WARNING:
KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.
CAUTION:
BEFORE YOU MOVE AN OXYGEN GENERATOR (WITH OR WITHOUT AN OXYGEN CONTAINER), INSTALL A SAFETY RING OR PIN AND WARNING FLAG ON ITS IGNITION ACTUATOR. YOU MUST DO THIS:
- BEFORE YOU MOVE IT TO A DIFFERENT LOCATION
- BEFORE YOU PUT IT INTO STORAGE
- BEFORE YOU PREPARE IT FOR TRANSPORT.
CAUTION:
PUT DRY AND CLEAN METAL OR PLASTIC PLUGS ON ALL PIPES OR UNITS THAT YOU REMOVE TEMPORARILY. THEN PUT EACH PIPE OR UNIT IN A SEALED VINYL BAG. IF YOU DO NOT OBEY THESE INSTRUCTIONS, CONTAMINATION OF THE OXYGEN SYSTEM CAN OCCUR.
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 | CUTTER - THIN BLADE |
| No specific | 1 | PLIERS - JAWED, SOFT |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | 1 | SCREWDRIVER - FLAT HEAD |
| No specific | AR | SIDE CUTTERS |
| No specific | AR | WARNING NOTICE(S) |
| 995000-00 | 1 | TOOL-MANUAL RELEASE |
| 995022 | 1 | INSERTION TOOL-PIN,OXYGEN GENERATOR |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 200 | UPPER HALF FUSELAGE |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 1 | SAFETY RING WITH A WARNING FLAG | AIPC 35-21-41-99-010 |
| 7 | SAFETY PIN WITH THE WARNING FLAG | AIPC 35-21-41-99-020 |
| 7 | SAFETY PIN WITH THE WARNING FLAG | AIPC 35-21-89-99-020 |
| 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 35-00-00-860-001-A | Special Precautions When Working on a Gaseous Oxygen System |
Emergency Oxygen Mask - Removal/InstallationSubtask 35-21-43-861-050-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 aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(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 35-21-43-865-050-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 aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(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):
Subtask 35-21-43-010-050-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 |
C. Get Access
(1) Put the 995000-00 TOOL-MANUAL RELEASE into the access hole in the applicable door.
4. Procedure(1) Put the 995000-00 TOOL-MANUAL RELEASE into the access hole in the applicable door.
NOTE: It is permitted to use alternative tool P/N 995000.
(2) Push the tool until the latch is released. The door opens and the masks fall out. Subtask 35-21-43-020-050-B ** ON A/C NOT FOR ALL
A. Removal of the Oxygen Mask in the Cabin
(a) Install the AIPC 35-21-41-99-010 SAFETY RING WITH A WARNING FLAG (1):
1 Put the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR between the housing of the actuation pin (11) and release pin (2).
2 The actuation pin (11) moves out and you can see the hole for the safety ring with the warning flag (1).
3 Hold the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR in position and install the safety ring with a warning flag (1).
(b) Do not remove the release pin (2).
(2) For oxygen container E1XXXX-series:
(a) Disconnect the oxygen-generator release-lanyards (4) from snap hooks (7) of the oxygen masks (5).
(4) If installed, disconnect the pull flag(s) (6) from the snap hooks (7) of the oxygen mask(s) (5).
(5) Remove supply hoses (10) from outlets (8) of outlet manifold (9):
1 Cut the end of the supply hoses (10) immediately behind the outlet(s) (8) with a CUTTER - THIN BLADE.
2 Cut and discard the cable ties (12) with a SIDE CUTTERS.
3 Cut and discard the remaining part of the supply hoses (10) with a CUTTER - THIN BLADE.
(b) For the remaining emergency oxygen containers:
1 Put the SCREWDRIVER - FLAT HEAD between the supply hoses (10) and the outlet manifold (9).
2 Carefully push the supply hoses (10) to the end of the outlets (8).
Subtask 35-21-43-020-050-C ** ON A/C NOT FOR ALL CAUTION:
DO NOT PULL THE MASK LANYARD FROM THE END WITH THE RELEASE PIN. IF YOU PULL ON THIS END OF THE LANYARD, YOU WILL REMOVE THE RELEASE PIN AND START A FLOW OF OXYGEN WHICH CANNOT BE STOPPED.
(1) If the procedure is not related to the oxygen generator replacement: (a) Install the AIPC 35-21-41-99-010 SAFETY RING WITH A WARNING FLAG (1):
1 Put the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR between the housing of the actuation pin (11) and release pin (2).
2 The actuation pin (11) moves out and you can see the hole for the safety ring with the warning flag (1).
3 Hold the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR in position and install the safety ring with a warning flag (1).
(b) Do not remove the release pin (2).
(2) For oxygen container E1XXXX-series:
(a) Disconnect the oxygen-generator release-lanyards (4) from snap hooks (7) of the oxygen masks (5).
NOTE: The oxygen-generator release-lanyards have a green color.
(3) Disconnect mask lanyards (3) from the snap hooks (7) of the oxygen masks (5). (4) If installed, disconnect the pull flag(s) (6) from the snap hooks (7) of the oxygen mask(s) (5).
(5) Remove supply hoses (10) from outlets (8) of outlet manifold (9):
NOTE: This task will be easier to do, when you prevent pulling the supply hoses.
(a) For the emergency oxygen container P/N D(G/W) XXXXX series: 1 Cut the end of the supply hoses (10) immediately behind the outlet(s) (8) with a CUTTER - THIN BLADE.
2 Cut and discard the cable ties (12) with a SIDE CUTTERS.
3 Cut and discard the remaining part of the supply hoses (10) with a CUTTER - THIN BLADE.
(b) For the remaining emergency oxygen containers:
1 Put the SCREWDRIVER - FLAT HEAD between the supply hoses (10) and the outlet manifold (9).
2 Carefully push the supply hoses (10) to the end of the outlets (8).
A. Removal of the Oxygen Mask Assemblies
(1) If the procedure is not related to the oxygen generator replacement:
(a) Install the safety pin/ring with a warning flag (1):
1 Put the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR between the housing of the firing pin (4) and release pin (2).
2 The firing pin (4) moves out and you can see the hole for the safety pin/ring with a warning flag (1).
3 Hold the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR in position and install the safety pin/ring with a warning flag (1).
(b) Remove the release pin (2) with a mask lanyards (3) from the firing pin (4).
(c) Open the eye of the release pin (2) and remove the mask lanyard (3).
(d) Remove the remaining mask lanyards (3) from the release pin (2).
(e) Disconnect mask lanyards (3) from the snap hooks (24) of oxygen masks (25).
(f) If applicable, disconnect the pull flags (23) from the snap hooks (24) of oxygen masks (25).
(g) For the 22-minutes oxygen generators P/N E63420/430/440-series installed in the I-type oxygen containers 100/101-series:
1 Disconnect the oxygen-generator release lanyards (26) from snap hooks (24) of the oxygen masks (25).
(a) Cut and discard the metal clamps (5) with SIDE CUTTERS.
(b) Cut the supply hoses (6) close to the end of the outlets (7) with CUTTER - THIN BLADE.
(c) Cut and discard the remaining parts of the supply hoses (6).
(3) For the 15-minutes oxygen generators P/N E63120/130/140/320/330/340-series with plastic outlets and supply hoses with reinforced end:
(a) Cut the supply hose (9) immediately behind the recess (11) of the outlet (10) with a CUTTER - THIN BLADE.
(b) Pull and twist the supply hose (9) to remove it from the outlet (10).
(c) Carefully cut and discard the remaining part of the supply hose (9).
(4) For the 22-minutes oxygen generators P/N 6302200/300/400-series with metal outlets and silicon high-temperature hoses:
(a) If the procedure is related to the oxygen generator replacement:
1 Cut the silicon high-temperature hoses (13) close to the end of the outlets (14) with CUTTER - THIN BLADE.
2 Cut and discard the remaining parts of silicon high-temperature hoses (13).
(b) If the procedure is not related to the oxygen generator replacement:
1 Cut the end of the supply hose (16) immediately behind the recess (17) of the connecting piece (18) with a CUTTER - THIN BLADE.
2 Hold the connecting piece (18) tightly and carefully remove the supply hose (16).
3 Cut and discard the remaining part of the supply hose (16).
(5) For the 22-minutes oxygen generators P/N E63220/230/240/420/430/440-series installed in oxygen containers 100/101-series:
(a) Cut the silicon supply hoses (19) close to the end of the outlets (21) with a CUTTER - THIN BLADE.
(b) Cut and discard the cable ties (20) with SIDE CUTTERS.
(c) Cut and discard the remaining parts of the silicon supply hoses (19).
(6) For the 22-minutes oxygen generators P/N E63220/230/240420/430/440-series installed in oxygen containers 000/003/004/005/009-series:
(a) If procedure is related to the oxygen generator replacement:
1 Cut the silicon high-temperature hose (30) close to the end of the outlet (27) with a CUTTER - THIN BLADE.
2 Cut and discard the cable ties (28) with a SIDE CUTTERS.
3 Cut and discard the remaining parts of the silicon high-temperature hoses (30).
(b) If the procedure is not related to the oxygen generator replacement:
1 Cut the end of the supply hose (33) directly behind the recess (32) of the connecting piece (31) with a CUTTER - THIN BLADE.
2 Hold the connecting piece (31) tightly and carefully remove the supply hose (33).
3 Cut and discard the remaining part of the supply hose (33).
Subtask 35-21-43-020-050-H ** ON A/C NOT FOR ALL (1) If the procedure is not related to the oxygen generator replacement:
(a) Install the safety pin/ring with a warning flag (1):
1 Put the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR between the housing of the firing pin (4) and release pin (2).
2 The firing pin (4) moves out and you can see the hole for the safety pin/ring with a warning flag (1).
3 Hold the 995022 INSERTION TOOL-PIN,OXYGEN GENERATOR in position and install the safety pin/ring with a warning flag (1).
(b) Remove the release pin (2) with a mask lanyards (3) from the firing pin (4).
(c) Open the eye of the release pin (2) and remove the mask lanyard (3).
(d) Remove the remaining mask lanyards (3) from the release pin (2).
(e) Disconnect mask lanyards (3) from the snap hooks (24) of oxygen masks (25).
(f) If applicable, disconnect the pull flags (23) from the snap hooks (24) of oxygen masks (25).
(g) For the 22-minutes oxygen generators P/N E63420/430/440-series installed in the I-type oxygen containers 100/101-series:
1 Disconnect the oxygen-generator release lanyards (26) from snap hooks (24) of the oxygen masks (25).
NOTE: The oxygen-generator release lanyards are a green color.
(2) For the 15-minutes oxygen generators P/N 6301200/300/400-series with metal outlets and supply hoses without reinforced ends: (a) Cut and discard the metal clamps (5) with SIDE CUTTERS.
(b) Cut the supply hoses (6) close to the end of the outlets (7) with CUTTER - THIN BLADE.
(c) Cut and discard the remaining parts of the supply hoses (6).
(3) For the 15-minutes oxygen generators P/N E63120/130/140/320/330/340-series with plastic outlets and supply hoses with reinforced end:
(a) Cut the supply hose (9) immediately behind the recess (11) of the outlet (10) with a CUTTER - THIN BLADE.
(b) Pull and twist the supply hose (9) to remove it from the outlet (10).
(c) Carefully cut and discard the remaining part of the supply hose (9).
(4) For the 22-minutes oxygen generators P/N 6302200/300/400-series with metal outlets and silicon high-temperature hoses:
(a) If the procedure is related to the oxygen generator replacement:
1 Cut the silicon high-temperature hoses (13) close to the end of the outlets (14) with CUTTER - THIN BLADE.
2 Cut and discard the remaining parts of silicon high-temperature hoses (13).
(b) If the procedure is not related to the oxygen generator replacement:
1 Cut the end of the supply hose (16) immediately behind the recess (17) of the connecting piece (18) with a CUTTER - THIN BLADE.
2 Hold the connecting piece (18) tightly and carefully remove the supply hose (16).
3 Cut and discard the remaining part of the supply hose (16).
(5) For the 22-minutes oxygen generators P/N E63220/230/240/420/430/440-series installed in oxygen containers 100/101-series:
(a) Cut the silicon supply hoses (19) close to the end of the outlets (21) with a CUTTER - THIN BLADE.
(b) Cut and discard the cable ties (20) with SIDE CUTTERS.
(c) Cut and discard the remaining parts of the silicon supply hoses (19).
(6) For the 22-minutes oxygen generators P/N E63220/230/240420/430/440-series installed in oxygen containers 000/003/004/005/009-series:
(a) If procedure is related to the oxygen generator replacement:
1 Cut the silicon high-temperature hose (30) close to the end of the outlet (27) with a CUTTER - THIN BLADE.
2 Cut and discard the cable ties (28) with a SIDE CUTTERS.
3 Cut and discard the remaining parts of the silicon high-temperature hoses (30).
(b) If the procedure is not related to the oxygen generator replacement:
1 Cut the end of the supply hose (33) directly behind the recess (32) of the connecting piece (31) with a CUTTER - THIN BLADE.
2 Hold the connecting piece (31) tightly and carefully remove the supply hose (33).
3 Cut and discard the remaining part of the supply hose (33).
A. Removal of the Oxygen Mask
(a) Put the PLIERS - JAWED, SOFT between the housing of the firing pin (6) and the release pin (5).
(b) Carefully move the firing pin (6) until you see the hole for the safety pin with the warning flag (7).
(c) Hold the PLIERS - JAWED, SOFT in position and install a new AIPC 35-21-41-99-020 SAFETY PIN WITH THE WARNING FLAG (7) or a new AIPC 35-21-89-99-020 SAFETY PIN WITH THE WARNING FLAG (7).
(2) Remove the release pin (5) from the firing pin (6).
(3) If the mask lanyard (1) is installed in the eyelet of the release pin (5):
(a) Open the eyelet and remove the mask lanyard (1).
(4) If the mask lanyard (1) is not installed in the eyelet of the release pin (5):
(a) Remove the mask lanyard (1) from the release pin (5).
(5) Disconnect the mask lanyard (1) from the snap hook (4) of the oxygen mask (3).
(6) If installed, remove the pull flag (2) from the snap hook (4) of the oxygen mask (3).
(7) Cut and discard the cable tie (12) with the SIDE CUTTERS.
(8) Cut the supply hose (8) immediately behind the recess (10) of the outlet (9) with the CUTTER - THIN BLADE.
(9) Pull and twist the supply hose (8) to remove it from the outlet (9) along with the oxygen mask (3).
(10) Carefully cut and discard the remaining part of the supply hose (8).
CAUTION:
DO NOT PULL THE MASK LANYARD FROM THE END WITH THE RELEASE PIN. IF YOU PULL ON THIS END OF THE LANYARD, YOU WILL REMOVE THE RELEASE PIN AND START A FLOW OF OXYGEN WHICH CANNOT BE STOPPED.
(1) Installation of the safety pin with the warning flag (7): (a) Put the PLIERS - JAWED, SOFT between the housing of the firing pin (6) and the release pin (5).
(b) Carefully move the firing pin (6) until you see the hole for the safety pin with the warning flag (7).
(c) Hold the PLIERS - JAWED, SOFT in position and install a new AIPC 35-21-41-99-020 SAFETY PIN WITH THE WARNING FLAG (7) or a new AIPC 35-21-89-99-020 SAFETY PIN WITH THE WARNING FLAG (7).
(2) Remove the release pin (5) from the firing pin (6).
(3) If the mask lanyard (1) is installed in the eyelet of the release pin (5):
(a) Open the eyelet and remove the mask lanyard (1).
(4) If the mask lanyard (1) is not installed in the eyelet of the release pin (5):
(a) Remove the mask lanyard (1) from the release pin (5).
(5) Disconnect the mask lanyard (1) from the snap hook (4) of the oxygen mask (3).
(6) If installed, remove the pull flag (2) from the snap hook (4) of the oxygen mask (3).
(7) Cut and discard the cable tie (12) with the SIDE CUTTERS.
(8) Cut the supply hose (8) immediately behind the recess (10) of the outlet (9) with the CUTTER - THIN BLADE.
(9) Pull and twist the supply hose (8) to remove it from the outlet (9) along with the oxygen mask (3).
(10) Carefully cut and discard the remaining part of the supply hose (8).