DOC AIRBUS | AMM A320FPASSENGER OXYGEN - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
Location of the Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of the Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of the Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
Passenger Oxygen System ** ON A/C NOT FOR ALL
If there is a sudden loss of cabin pressure, emergency oxygen containers supply emergency oxygen to the passengers and the cabin attendants. Each emergency oxygen container has a solid-state chemical oxygen-generator and two or more continuous-flow oxygen masks. Flexible supply hoses connect the masks to the chemical oxygen generators. The emergency oxygen containers are installed:
If there is a sudden loss of cabin pressure, emergency oxygen containers supply emergency oxygen to the passengers and the cabin attendants. Each emergency oxygen container has a source of oxygen and two or more continuous-flow oxygen masks. Flexible supply hoses connect the masks to the manifold of the source of oxygen. The emergency oxygen containers with chemical oxygen generators are installed:
To show the passengers how to use the emergency oxygen, demonstration masks are used. The demonstration masks do not operate and are not connected to the system.
** ON A/C NOT FOR ALL Location of the Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of the Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of the Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL Location of Emergency Oxygen Containers ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL Passenger Oxygen System ** ON A/C NOT FOR ALL - Above the passenger seats
- In the lavatories
- At the cabin attendants stations
- At the cabin attendants working areas.
If there is a sudden loss of cabin pressure, emergency oxygen containers supply emergency oxygen to the passengers and the cabin attendants. Each emergency oxygen container has a source of oxygen and two or more continuous-flow oxygen masks. Flexible supply hoses connect the masks to the manifold of the source of oxygen. The emergency oxygen containers with chemical oxygen generators are installed:
- Above the passenger seats
- At the cabin attendants stations
- At the cabin attendants working areas.
To show the passengers how to use the emergency oxygen, demonstration masks are used. The demonstration masks do not operate and are not connected to the system.
2. Operation
Passenger Oxygen System - Controls and Indications ** ON A/C NOT FOR ALL
Passenger Oxygen System - Controls and Indications ** ON A/C NOT FOR ALL
When the cabin pressure decreases to a pressure equivalent of 14000 +-750 ft. or -+250 ft. (4267.12 +-228.60 m or -+76.20 m), altitude pressure switch 16WR will close. This step operates the emergency oxygen system automatically. If the altitude pressure switch fails, you can operate the system with OXYGEN/MASK MAN ON pushbutton switch 14WR. This switch is installed in cockpit overhead panel 21VU.
Passenger Oxygen System - Controls and Indications ** ON A/C NOT FOR ALL Passenger Oxygen System - Controls and Indications ** ON A/C NOT FOR ALL A. Sequence of Operation
The doors of the emergency oxygen containers open and the masks fall out for the passengers and the cabin attendants.
If PRAM 10RX, I-PRAM 117RH or Voice Synthesizer Unit 11RX is installed, a recorded message is transmitted on the passenger address system. The SYS ON indicator light 12WR, installed on the cockpit overhead panel 21VU comes on.
The emergency oxygen flows when you pull the oxygen mask to your face. This starts the chemical oxygen generator which gives approximately 15 minutes supply of oxygen.
The doors of the emergency oxygen containers open and the masks fall out for the passengers and the cabin attendants.
If PRAM 10RX, I-PRAM 117RH or Voice Synthesizer Unit 11RX is installed, a recorded message is transmitted on the passenger address system. The SYS ON indicator light 12WR, installed on the cockpit overhead panel 21VU comes on. The OXY PAX ON indication on the Engine/Warning Display comes on. The color of the OXY PAX ON indicator can be:
The doors of the emergency oxygen containers open and the masks fall out for the passengers and the cabin attendants.
If PRAM 10RX, I-PRAM 117RH or Voice Synthesizer Unit 11RX is installed, a recorded message is transmitted on the passenger address system. The SYS ON indicator light 12WR, installed on the cockpit overhead panel 21VU comes on. The OXY PAX ON indication on the Engine/Warning Display comes on. The color of the OXY PAX ON indicator can be:
The doors of the emergency oxygen containers open and the masks fall out for the passengers and the cabin attendants.
If PRAM 10RX, I-PRAM 117RH or Voice Synthesizer Unit 11RX is installed, a recorded message is transmitted on the passenger address system. The SYS ON indicator light 12WR, installed on the cockpit overhead panel 21VU comes on.
The emergency oxygen flows when you pull the oxygen mask to your face. This starts the chemical oxygen generator which gives approximately 15 minutes supply of oxygen.
The doors of the emergency oxygen containers open and the masks fall out for the passengers and the cabin attendants.
If PRAM 10RX, I-PRAM 117RH or Voice Synthesizer Unit 11RX is installed, a recorded message is transmitted on the passenger address system. The SYS ON indicator light 12WR, installed on the cockpit overhead panel 21VU comes on. The OXY PAX ON indication on the Engine/Warning Display comes on. The color of the OXY PAX ON indicator can be:
- Green when both CPCs (11HL and 12HL) sense higher than ground altitude
- Amber when one or both CPCs (11HL and 12HL) sense ground altitude.
The doors of the emergency oxygen containers open and the masks fall out for the passengers and the cabin attendants.
If PRAM 10RX, I-PRAM 117RH or Voice Synthesizer Unit 11RX is installed, a recorded message is transmitted on the passenger address system. The SYS ON indicator light 12WR, installed on the cockpit overhead panel 21VU comes on. The OXY PAX ON indication on the Engine/Warning Display comes on. The color of the OXY PAX ON indicator can be:
- Green when both CPCs (11HL and 12HL) sense higher than ground altitude
- Amber when one or both CPCs (11HL and 12HL) sense ground altitude.
B. After Operation
30 seconds after altitude pressure switch 16WR has closed, time delay relays 8WR and 9WR operate. These switch off the supply to oxygen power-supply relay 10WR.
To reset the system, you press OXYGEN/TMR RESET pushbutton switch 13WR on maintenance panel 50VU. SYS ON indicator light 12WR goes off.
30 seconds after altitude pressure switch 16WR has closed, time delay relays 8WR and 9WR operate. These switch off the supply to oxygen power-supply relay 10WR.
To reset the system, you press OXYGEN/TMR RESET pushbutton switch 13WR on maintenance panel 50VU. SYS ON indicator light 12WR goes off.