DOC AIRBUS | AMM A320FFLIGHT CREW PORTABLE DEVICES - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The flight-crew emergency breathing-hood system provides protection to the eyes and respiratory system for crew members.
It is used when you fight a fire, against the emission of smoke and noxious gas.
The breathing hood ensures a total duration of 15 minutes.
** ON A/C NOT FOR ALL The flight-crew emergency breathing-hood system provides protection to the eyes and respiratory system for crew members.
It is used when you fight a fire, against the emission of smoke and noxious gas.
The breathing hood ensures a total duration of 15 minutes.
2. Description
A. Breathing Hood System
(1) Component location
The breathing hood container is installed in the cockpit in the R aft console 702VU.
The breathing hood container is installed in the cockpit in the R aft console 702VU.
Breathing Hood Container(2) Storage
The breathing hood is vacuum-sealed in a specially transparent bag and then installed in the box.
The breathing hood is vacuum-sealed in a specially transparent bag and then installed in the box.
(3) Box description
This box made of a fire-retardant polyethylene is equipped with:
This box made of a fire-retardant polyethylene is equipped with:
(a) a handle
(b) a pictogram which describes the utilization procedure
(c) a visual inspection porthole of humidity indicator (operational color: blue).
B. Description of the Protective Breathing Hood
The protective breathing-hood equipment is composed of:
The protective breathing-hood equipment is composed of:
(1) A hood provided with:
(a) the visor
(b) the head harness
(c) the elastic neck seal.
(2) A life support pack
The life support pack is fixed on the rear of the hood and comprises:
The life support pack is fixed on the rear of the hood and comprises:
(a) an oxygen generator
(b) a venturi nozzle
(c) a C02 scrubber
(d) an actuation ring.
C. Technical Characteristics
(1) Type semi-closed circuit
(2) Duration: 15 minutes (minimum)
(3) Storage life: 10 years in a sealed evacuated barrier envelope
(4) Maximum operating altitude: 40,000 ft.
3. Operation/Control and Indicating
A. Operation
The protective breathing hood equipment works with a semi-closed circuit.
As soon as the "Pull to Activate" ring is disengaged from the unit, low pressure oxygen is produced by an oxygen generator. Oxygen flows from the generator into a venturi nozzle and mixes with the hood gases while it induces the flow through the C02 scrubber.
The protective breathing hood equipment works with a semi-closed circuit.
As soon as the "Pull to Activate" ring is disengaged from the unit, low pressure oxygen is produced by an oxygen generator. Oxygen flows from the generator into a venturi nozzle and mixes with the hood gases while it induces the flow through the C02 scrubber.
B. Donning Sequence