Air Conditioning

Question 1

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

Answer 1

One zone controller and two pack controllers

Question 2

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

Answer 2

High air pressure

Question 3

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

Answer 3

forward cargo compartment

Question 4

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

Answer 4

HI

Question 5

If pack flow is selected to LO and temperature demand cannot be satisfied, the pack reverts to ___ flow

Answer 5

NORM

Question 6

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

Answer 6

engine idle is automatically increased

Question 7

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

Answer 7

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

Question 8

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

Answer 8

Trim

Question 9

Using external conditioned ground air simultaneously with airplane pack air is

Answer 9

prohibited

Question 10

the HOT AIR FAULT light illuminates amber when a duct ___ is detected

Answer 10

Overheat

Question 11

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

Answer 11

cabin zone inlet duct temperature is fixed at 59* F

Question 12

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

Answer 12

Pack flow is fixed at pre-failure setting

Question 13

what occurs if both packs controller channel fail?

Answer 13

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

Question 14

if a zone controller primary channel fault occurs, what happens to the air conditioning system?

Answer 14

the flight deck is controlled to 76 degrees F by pack 1 and the cabin forward and aft zones are con0trolled to 76 degrees F by pack 2

Question 15

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

Answer 15

primary zone controller fault is detected

Question 16

if both zone controller channel fail,

Answer 16

the related ECAM information is not displayed and msg PACK REG appears

Question 17

what pilot action is required with loss of primary and secondary zone contorller channels

Answer 17

none. system automatically goes to a fixed temperature

Question 18

selecting the RAM AIR switch ON, opens the ram air inlet provided the ___ switch is in its normal position

Answer 18

ditching

Question 19

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

Answer 19

cold skin temperatures

Question 20

you are doing the walkaround at ORD in JAN and notice both the inlect and extract valves are closed

Answer 20

this is normal

Question 21

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

Answer 21

cabin entretrainment system

Question 22

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 22

opens to approximately 50% if the cabin pressure MODE SEL switch is in AUTO

Question 23

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

Answer 23

Duct overheat in the avionics ventilation system