bank 4

The flight crew opens or closes the crew shut-off valves through:

• The CREW SUPPLY P/B SW installed on the overhead panel

• The ON/OFF lever on the reservoir

• The P/B SW on the oxygen storage compartment

The crew oxygen system has:

• Two independent subsystems

• Four independent subsystems

• One systems

Which component control and monitor the Crew oxygen system?

• No controller

• By Oxygen System control and Monitoring applications (OSCM)

• Monitor by SDAC

Which the function of the Low Pressure Switch in Crew Oxygen System?

• Detected Low Pressure in oxygen distribution line

• Detected discharge status of the oxygen cylinder

• Detected Low Pressure in oxygen distribution line and confirm the position of the shut off valve

How many input signal for start of the passenger oxygen system?

• One input from CPCS, one from the atmospheric pressure transducer and one from MASK MAN ON

• One input from CPCS only

• One input from MASK MAN ON P/B only

During disconnection/reconnection of an oxygen line connector, you use:

• One wrench

• Two wrenches: one for the nut and one for the counter nut to avoid force onto the material

• Two wrenches: one for the nut and bolt to avoid force onto the material

The crew oxygen system has:

• One system for the CAPT, F/O, Third Occupant and Fourth Occupant

• Two subsystems: Left hand oxygen subsystem for the CAPT, Fourth Occupant and right hand oxygen subsystem for the F/O, the Third Occupant

• Two subsystems: Forward oxygen subsystem for the CAPT, F/O and aft oxygen subsystem for the

How to check the status of the passenger oxygen generator?

• By an indicator dot on its starter side

• By a pressure switch on generator

• Can not check its status

Memos displayed on the WD are:

• OXY PAX SYS ON (green) when the cabin oxygen is activated by the CPCS cabin low pressure data

• OXY PAX SYS ON (amber) when the cabin oxygen is activated by the atmospheric transducer (TPA) or the "Mask Man On" P/B Switch (CPCS data not available)

• Both answers are correct

A reset of the passenger oxygen system

• Can only be done on ground (or if the cabin altitude is below 12000ft)

• Can only be done in flight (the cabin altitude is above 12000ft)

• Can be done on ground or in flight at any time