Air Conditioning System Quiz

Conditioned air is distributed to:

• Cockpit, cargo bays and cabin

• Cockpit, fwd and aft cabins

• Cockpit, avionics bay and cabin

• Cockpit, cabin and holds 1 and 2 only

Hot air fault light illuminates on the air conditioning panel,

• The hot air press. reg. valve opens and the trim air valves close.

• The hot air press. reg. valve closes and the trim air valves open.

• The hot air press. reg. valve closes and the trim air valves close.

• The hot air press. reg. valve opens and the trim air valves open.

Does the trim air provide the warm air or the cold air to the air conditioning system?

• Cold air

• Warm air

In case of zone controller primary and secondary channel failure, what temperatures are maintained by pack one and pack two?

• 15 deg C both

• 25 deg C both

• 20 deg C for pack one and 10 deg C for pack two

• 24 deg C for pack one and 15 deg C for pack two

In normal flight in closed circuit configuration, the avionics ventilation system controls the temperature of the cooling air by:

• Adding air conditioned air to the flow

• Extracting air overboard

• Adding avionics bay air

• Passing air through a skin heat exchanger

To enable Ram air to the mixture unit, The Ram air switch should be used:

• At any time

• Only when differential pressure is less than 1 psi.

• When pressure is greater than 1 psi diff.

• Only after outflow valve is fully opened

Pack controller, primary channel failure.

• The secondary computer operates as a backup mode and regulation is not optimized

• The secondary computer takes over (all functions as normal)

• Pack is lost

• Pack outlet temperature is controlled at 15 deg C

Pack controller, secondary channel failure

• No effect on pack regulation backup mode is lost

• Pack is lost

• No effect (all modes still available)

• Pack outlet temperature is controlled at 15 deg C

Pack controller, primary and secondary channel failure

• Pack outlet temperature is controlled to between 5 and 30 deg C by the anti-ice valve

• The pack is closed

• The packs deliver a fixed temperature of 20 deg C

Hot air pressure reg. valve failed open:

• Optimized regulation is lost

• The temperature stays at the value selected

• No effect

• Cabin temperature will be controlled at the upper limit 30 deg C