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┃                                ┃                                ┣━━━━┳━━━━┫
┃      A~7-~'M" A321             ┃FIXED OXYGEN SYSTEM FOR COCKPIT ┃SEQ 001 ┃REV 28  ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                                ┃        ┃        ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━━┻━━━━┻━━━━┛
The cockpit's fixed oxygen system consists of :
- a high-pressure cylinder in the left hand lower fuselage
- a pressure regulator connected directly to the cylinder that delivers oxygen at a pressure
   suitable for users
- two overpressure safety systems to vent oxygen overboard through a safety port if the
   pressure gets too high
- a supply solenoid valve that allows the crew to shut off the distribution system
- three (or four as installed) full-face quick-donning masks stowed in readily accessible
   boxes adjacent to crew members' seats (one at each seat).
OPERATION
The crew member squeezes the red grips to pull the mask out of its box, and this action
causes the mask harness to inflate.
A mask-mounted regulator supplies a mixture of air and oxygen or pure oxygen, or
performs emergency pressure control. With the regulator set on NORMAL, the user
breathes a mixture of cabin air and oxygen up to the cabin altitude at which the regulator
supplies 100 % oxygen. The user can select 100 %, in which case the regulator supplies
pure oxygen at all cabin altitudes.
If the situation calls for it, the user can use the emergency overpressure rotating knob and
receive pure oxygen at positive pressure.
The storage box contains a microphone lead with a quick-disconnect for connection to the
appropriate mask microphone cable.
Note : Each mask has a removable strip that protects the visor against scratches and
       which can be removed to recover partial sight in case of ice build-up on the mask
       subsequent to rapid depressurization,
CCM ALL
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┓
┃                                ┃                                  ┃1.35.20     P 2       ┃
┃                                ┃                                  ┣━━━━━┳━━━━━┫
┃I  ~-~ A318                     ┃I FIXED OXYGENXSYSTEM FOR COCKPIT ┃SEQ 001 1 ┃I REV 34  ┃
┃ aw aw ,, ~L,~ A319             ┃                                  ┃          ┃          ┃
┃ Lli,~ A320                     ┃                                  ┃          ┃          ┃
┃      A~7-~'M" A321             ┃                                  ┃          ┃          ┃
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual5(2)