Air Conditioning Questions

Question 1

The pack flow control valve automatically closes for all but which of the following

Answer 1

High air pressure

Question 2

Under normal conditions, it is possible to control temperature in all areas except the

Answer 2

Forward cargo compartment

Question 3

If the APU is supplying bleed air or one PACK fails, ______ flow is delivered regardless of pack flow selector position

Answer 3

HI

Question 4

If Pack Flow is selected to LO and temperature demand cannot be satisfied, the pack reverts to _____flow

Answer 4

NORM

Question 5

What happens if a zone cooling demand is not met due to low bleed pressure

Answer 5

Engine idle is automatically increased

Question 6

The PACK valves close when the ENG MODE SEL switch is placed to IGN/START before engine start. When will they reopen?

Answer 6

30 seconds after first engine start if second engine start has not been initiated

Question 7

Hot _____ air from the pneumatic system is used to maintain desired zone temperature

Answer 7

Trim

Question 8

Using external conditioned ground air simultaneously with airplane pack air is

Answer 8

Prohibited

Question 9

The HOT AIR FAULT light illuminates amber when a duct _____ is detected

Answer 9

Overheat

Question 10

What happens to cabin zone inlet duct temperature if the lav/galley extract fan fails?

Answer 10

Cabin zone inlet duct temperature is fixed at 59F

Question 11

If the primary PACK controller channel fails, the secondary pack controller channel automatically takes over and

Answer 11

Pack flow is fixed at pre-failure setting

Question 12

What occurs if both PACK controller channels fail?

Answer 12

PACK outlet temp goes to a set temperature range by the pack anti-ice valve.

Question 13

If a zone controller primary channel faults occurs, what happens to the air conditioning system?

Answer 13

The flight deck is controlled to 76 degrees F by pack 1 and the cabin forward and aft zones are controlled to 76 degrees F by pack 2

Question 14

ALTN MODE displays in green on the ECAM COND page when a

Answer 14

Primary zone controller fault is detected

Question 15

If both zone controller channels fail,

Answer 15

The related ECAM information is not displayed, and message PACK REG appears.

Question 16

What pilot action is required with loss of primary and secondary zone controller channels

Answer 16

None. System automatically goes to a fixed temperature

Question 17

Selecting the RAM AIR switch ON, opens the ram air inlet valve provided the _____ switch is not selected ON

Answer 17

DITCHING

Question 18

When will the avionics ventilation system be in the closed configuration while on the ground?

Answer 18

Cold Skin temperatures

Question 19

You are doing the walk around at ORD in January and notice both the inlet and extract valves are closed. You should

Answer 19

Continue the walk around; this is normal.

Question 20

The avionics ventilation system provides cooling for all the following except the

Answer 20

Cabin entertainment system

Question 21

The Air Conditioning RAM AIR switch is selected to ON, the differential pressure is less than 1 PSI. The ram air inlet opens and the outflow valve

Answer 21

Opens to approximately 50 percent if the cabin pressure MODE SEL switch is in AUTO.

Question 22

While pre-flighting, you hear a horn in the nose wheel well. Since the APU is NOT running, this may indicate a

Answer 22

Duct overheat in the avionics ventilation system

Question 23

During normal operation, the air conditioning system temperature is regulated by

Answer 23

One zone controller and two pack controllers