Airconditioning

Question 1

The Pack Flow Control Valve closes automatically in case of:

Answer 1

A Pack overheat(On ground only),
Engine Start
or operation of the Fire or Ditching push buttons.

Question 2

The Ram air inlet and outlet flaps close during

Answer 2

Take off and landing to avoid ingestion of foreign matter. During take off they close when TO power is set and struts are compressed. During landing they close once main gear struts are compressed and speed is at or above 70kt. They open 20 sec after speed drops below 70kt.

Question 3

The pack flow controller delivers higher flow when

Answer 3

In single pack operation, or

APU is supplying.

Question 4

The actual temperature for each zone is measured in the

Answer 4

Cockpit for cockpit zone.
Lavatory extraction circuit.
Galley ventilation system for the galley.

Question 5

The temperature selection range is from

Answer 5

18-30

Question 6

During a primary zone controller channel failure zone temperatures are controlled to

Answer 6

24*

Question 7

With the zone temperature selector in the 12 o’clock position the selected temperature is

Answer 7

24*.

In the cld position it is 18 and hot position 30

Question 8

Pack flow is automatically selected to high during

Answer 8

Single pack operation or when the APU is supplying bleed.

Question 9

Pack flow LO, NORM and HI equates to —- percent

Answer 9

LO 80%
NORM 100%
HI 120%

Question 10

In case of a ditching, an override switch on the control panel allows the flight crew to

Answer 10

Close the outflow valve and all valves below the floatation line.

Question 11

An automatic transfer of the Airconditioning controller occurs:

Answer 11

70 seconds after each landing, or

If the operating system fails

Question 12

If FMGC data is not available the pressure controller uses

Answer 12

The captain baro reference from the ADIRS and the LDG ELEV selection

Question 13

In Ground mode the outflow fully opens

Answer 13

Before take off and 55 seconds after landing. At touchdown any residual pressure is released at 500 fpm.

Question 14

During take off the pressure controller pre-pressurises the aircraft

Answer 14

At a rate of 400fpm until ^P is .1 PSI (to avoid surge once airborne). At liftoff the controller initiates the climb phase.

Question 15

During cruise the cabin altitude is limited to

Answer 15

A target maximum of approximately of 8000 ft

Question 16

During descent the maximum descent rate is

Answer 16

750 fpm