AIRBUS A320 FCOM DSC-21 Air Conditioning / Pressurization / Ventilation Part 2

Question 1

What happen if the first lane of the Air Conditioning System Controller (ACSC) fails ?

The related pack is lost

No effect, the second ACSC taks over

No effect, as the second lane takes over

No effect, as the second or the third lane take over

Question 2

What happen if both lanes of the ACSC fail ?

The related pack is lost, and the hot air pressure regulating valve and associated trim air valves close

No effect, the third lane takes over

No effect, the second ACSC takes over

It's impossible that both lanes fail

Question 3

What happen if a trim air valve fail ?

The optimized temperature regulation of the corresponding zone is lost

The optimized temperature regulation of all zones are lost

No effect

Question 4

What is the temperature which correspond to the 12 o'clock position of the zone temperature rotary selector (1) ?

18°C (64°F)

20°C (68°F)

22°C (72°F

24°C (76°F)

Question 5

The FAULT light comes amber on the HOT AIR pushbutton when :

Duct overheat is detected (temperature reaches 88°C (190°F), The valve and trim air valves close automatically

The valve or trim air valves are faulty

Not enough pressure in the duct

Question 6

What is not true when the FAULT light comes amber on the PACK pb-sw ?

The pack flow control valve position disagrees with the selected position

In the case of compressor outlet overheat

Pack outlet overheat

The pack flow demand cannot be satisfied

Question 7

You switch ON the RAM AIR pushbutton (guarded) but the DITCHING pb is also ON, The RAM AIR inlet will?

Open

Question 8

You switch ON the RAM AIR pushbutton (guarded) but the delta pressure is MORE than 1 PSI :

The outflow valve control remains normal. No emergency RAM air flows in

The RAM air inlet opens

Question 9

You switch ON the RAM AIR pushbutton (guarded) and if the delta pressure is below 1 PSI :

The outflow valve opens to about 50% under automatic control, the emer RAM air flow is directly supplied to the mixer unit

The outflow valve will close and the RAM air flow will supplied to the mixer unit

The outflow valve will open and the RAM air inlet will close

Question 10

When you push the CABIN FAN pb :

The two cabin fans are on

The two cabin fans are off

The three cabin fans are on

The three cabin fans are off

Question 11

The cabin pressurization system has four general functions, which one is not true?

Ground function : Fully opens the outflow valve on ground

Prepressurization : During takeoff, increases cabin pressure to avoid a surge in cabin pressure during rotation

Pressurization in flight : Adjusts cabin altitude, and rate of change to provide passengers with a comfortable flight

Depressurization : After touchdown, gradually releases residual cabin overpressure before the ground function fully opens the outflow valve

Submersible : When ditching, maintain cabin pressure to sink easy

Question 12

The outflow valve has an actuator that incorporates ?

1 motor

2 motors (one for automatic operation and one for manual operation)

3 motors (two for automatic operation and one for manual operation)

4 motors ( two for automatic operation and two for manual operation)

Question 13

For the pressurization system, how many safety valves did it get?

Question 14

For the pressurization system under automatic operation, Air pressure in the cabin follows external schedules that the system receives as signals from the Flight Management and Guidance System (FMGS), BUT when FMGS data is not available for auto press, ..

The crew only needs to select the landing field elevation

The crew should do nothing

Question 15

For the pressurization system, under manual mode, the flight crew controls the cabin altitude via ?

The manual motor of the outflow valve

The safety valve

Question 16

How many Cabin Pressure Controllers (CPC) equiped the PRESS system?

Only one

Two identical and independent

Three

Question 17

The Cabin Pressure Controllers (CPC) receives infos from different sources, which one is not true ?

Air Data Inertial Referencve System (ADIRS)

Flight management and Guidance Computer (FMGC)

Engine Interface Unit (EIU)

Landing Gear Control Interface Unit (LGCIU)

Flight Control Unit (FCU)

Question 18

When the CPC is in automatic or semi-automatic mode, one controller is active, the other one is in ?

Active also

Stanby

Question 19

Two independent pneumatic safety valves prevent cabin pressure from going too high or too low, those numbers are ?

> 8.6 PSI and < 1 PSI

> 2.5 PSI an < -1 PSI

< 8.6 PSI and > 1 PSI

> 5 PSI an < 1 PSI

Question 20

During the descent, the automatic pressure control mode gives a maximum cabin rate of ?

-250ft/min

-450ft/min

-500ft/min

-750ft/min

Question 21

After landing, the outflow valve fully opens after ?

10 seconds

30 seconds

55 seconds

75 seconds

Question 22

At touchdown, any remaining cabin pressure is release at a cabin vertical speed of ?

100ft/min

500ft/min

1000ft/min

Question 23

For the takeoff, to avoid a pressure surge at rotation, the controller pre-pressurizes the aircraft at a rate of ?

-400ft/min, until delta P reaches 0.1 PSI

400ft/min, until delta P reaches 1 PSI

Question 24

If both automatic pressurization control systems fail, the flight crew may use ?

The cabin press control panel to take over manual control of cabin pressurization

Switch off both packs

Question 25

If the pressurization system is manually-controlled,do you know if the outflow valve will open automatically at touchdown?

Yes

Question 26

When you press the DITCHING pb on the CABIN PRESS control panel, it will not closed ?

The outflow valve

The emergency ram air inlet

The avionics ventilation inlet and extracts valves

The pack flow control valves

The pack inlet flap

Question 27

The safety valve opens when the cabin differential pressure is ?

Between 8.2 and 8.9 PSI

Below -1 PSI

Above 2.5 PSI

Question 28

The ventilation system includes ventilation for 3 things, which one is not correct?

The avionics, controlled by the avionics equipment ventialtion controller (AEVC)

The battery

The lavatories and galleys

Cargo compartments

Question 29

On ground the avionics ventilation inlet and extract valves are closed when ?

+ 10°C temperature increasing or + 5°C temperature decreasing

+ 12°C temperature increasing or + 9°C temperature decreasing

+ 15°C temperature increasing or + 11°C temperature decreasing

+ 20°C temperature increasing or + 15°C temperature decreasing

Question 30

When the smoke detector detects smoke in the avionics ventilationair, the BLOWER and THE EXTRACT FAULT lights come on. When both BLOWER and EXTRACT pb are set to OVRD,

The air conditioning system supplies cooling air, which is then exhausted overboard. The blower fan stops

The blower and extract fans stops

The air condioting inlet and extract valve open