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A320-AirCond&Pressurization > Quiz > Flashcards

Quiz Flashcards

1
Q

Conditioned air is distributed to:

A

Cockpit, fwd and aft cabins

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2
Q

Hot air fault light illuminates on the air conditioning panel

A

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

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3
Q

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

A

Warm air

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4
Q

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

A

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

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5
Q

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

A

Passing air through a skin heat exchanger.

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6
Q

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

A

Only when differential pressure is less than 1 psi.

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7
Q

Pack controller, primary channel failure.

A

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

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8
Q

Pack controller, secondary channel failure

A

No effect on pack regulation backup mode is lost

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9
Q

Pack controller, primary and secondary channel failure

A

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

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10
Q

Hot air press. reg. valve failed open:

A

No effect

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11
Q

Bleed air supplied from the APU (APU bleed valve open), the pack flow is automatically selected:

A

High

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12
Q

Trim air valve, each one optimizes the temperature by:

A

Adding hot air

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13
Q

Hot air pressure regulating valve:

A

Regulates the pressure of hot air tapped upstream of the packs

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14
Q

Pack flow control valve:

A

Is pneumatically operated and electrically controlled

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15
Q

Engine flow demand, when the heating or cooling demand in one zone cannot be satisfied:

A

The minimum idle is increased automatically

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16
Q

What is the Norm.Max. cabin altitude?

A

8,000 ft

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17
Q

What is the Max. negative Diff. pressure for the cabin?

A

1 psi.

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18
Q

It is permissible to use simultaneously packs and Lp ground unit during long stops in a hot airfield

A

No

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19
Q

What are the different sources of air for air conditioning and pressurization?

A

Engine bleed air and recirculated air, or if selected, APU bleed air and recirculated air.

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20
Q

During the exterior preflight on a warm day, in what position would you expect to find the avionics ventilation system INLET and EXTRACT valves to be in?

A

Open.

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21
Q

What happens to the pack flow control valves during engine start?

A

They automatically close.

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22
Q

The temperature of each aircraft zone is optimized by means of:

A

A TRIM AIR valve.

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23
Q

When does normal pressurization occur?

A

Pressurization occurs during the takeoff roll.

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24
Q

When does normal depressurization occur?

A

It is complete 1 minute after touchdown.

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25
Q

Under what conditions should the pack flow controller be set to LO?

A

With a low passenger load to reduce bleed air demand and improve fuel efficiency.

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26
Q

Which statement is correct regarding illumination of the amber AFT ISOL VALVE fault light?

A

Means that either the inlet or outlet isolation valve(s) disagrees with the switch position.

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27
Q

Pressurization controllers receive inputs from:

A

LGCIU, ADIRU, FMGS, and EIU.

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28
Q

What computers control the cabin and cockpit conditioned air?

A

One zone controller that passes information and instructions to two pack controllers for three zones.

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29
Q

When would you select RAM AIR ON?

A

Dual pack failure or smoke removal.

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30
Q

What happens when a temperature selector rotary knob is adjusted?

A

A signal is sent to the zone controller requesting a different temperature.

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31
Q

With APU BLEED ON and engine BLEED switches ON with engines running, what is the position of the engine bleed valves?

A

Closed

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32
Q

Pressurization is normally automatic. Can you interfere with it?

A

Yes, CABIN PRESS MODE SEL to OVERRIDE and MAN V/S CTL toggle switch.

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33
Q

Under what conditions should the pack flow controller be set to HI?

A

With a high passenger load in hot conditions in order to help reduce the cabin temperature.

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34
Q

What is the function of the ram air valve?

A

Emergency smoke removal and ventilation in the event of dual pack failure.

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35
Q

Placing the EXTRACT push button to override:

A

Insures the extract fan will continue to be energized.

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36
Q

The Ram Air valve:

A

Must be manually activated.

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37
Q

What limitation is associated with the ram air valve?

A

Do not open if cabin pressure is greater than 1 psi.

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38
Q

With the pressurization system in the automatic mode, which valves are closed when the ditching push button is selected on?

A

All valves below the water line.

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39
Q

What is the maximum negative differential pressure for the cabin?

A

1 psi.

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40
Q

The HOT AIR valve push button controls:

A

The hot air manifold.

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41
Q

Both pressurization auto controllers are set by the active flight plan loaded in the MCDU. The QNH entry on the MCDU Approach Performance page refines the depressurization schedule for the landing.

A

True.

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42
Q

Aft cargo indications may be found on which ECAM page(s)?

A

The ECAM cruise page and the COND page.

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43
Q

Avionics ventilation system indications may be found on which ECAM page(s)?

A

Only the CAB PRESS page.

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44
Q

When APU is supplying the packs, the pack controller sends a demand signal to increase airflow when a zone temperature cannot be satisfied. This signal is sent to the:

A

APU ECB.

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45
Q

In case of zone controller primary and secondary channel failure, what temperatures are maintained by Packs 1 and 2?

A

20 deg.C for Pack one and 10 deg.C for Pack two

46
Q

The PACK FLOW controller is set to NORM and yet the ECAM display shows PACK FLOW to be high. How is this possible?

A

HI flow is automatically selected regardless of PACK FLOW selector position because air is only being supplied by the APU.

47
Q

When would you select PACK FLOW to HI?

A

Smoke removal or hot/humid conditions.

48
Q

Which of the following statements is correct concerning conditioned air?

A

Recirculating fans draw cabin air to a mixing unit where conditioned air is added.

49
Q

How many temperature selectors are there on the A320? How many temperature zones are there?

A

Three rotary temperature selectors, one each for the cockpit zone, the forward cabin zone, and the aft cabin zone.

50
Q

The temperature selectors are located in:

A

The cockpit

51
Q

During normal flight, the avionics ventilation system controls the temperature of the cooling air by:

A

Passing air through a skin heat exchanger.

52
Q

Placing the avionics ventilation system in the smoke configuration:

A

De-energizes the blower fan, extract fan runs, and opens the air conditioning extract valves.

53
Q

How can you change controllers during flight?

A

Cycle the CABIN PRESS MODE SEL pushbutton to the MAN position then back to AUTO.

54
Q

Hot air “FAULT” light illuminates on the air conditioning panel.

A

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

55
Q

How many trim air valves are there?

A

Three: one each for the cockpit zone, the forward cabin zone, and the aft cabin zone.

56
Q

What position do the pack valves go to in the event of a loss of the bleed system pressure?

A

Closed.

57
Q

The RAM AIR switch should be used:

A

Only when differential pressure is less than 1 psi.

58
Q

What is the function of the Pack Flow selector?

A

Always allows high flow regardless of switch position when the APU is used for air conditioning.
Allows the pilot to increase pack flow but will not allow a manual decrease in flow if needed by the aircraft demands.

59
Q

Which configuration is the avionics ventilation system in while airborne with no abnormals present?

A

Closed.

60
Q

What is the maximum altitude associated with the pressurization system?

A

39,100 feet

61
Q

Trim air valves are controlled by:

A

The zone controller.

62
Q

Which statement is TRUE concerning the cargo compartment ventilation?

A

Only the aft cargo compartment is heated and ventilated. Cabin ambient air is mixed with hot trim air and drawn through isolation valves by extraction fans.

63
Q

The APU BLEED FAULT indicates that the main APU controller is in fault.

A

False.

64
Q

Aft cargo ventilation is controlled by:

A

The cargo ventilation controller.

65
Q

The vent fan runs any time there is a normal ships power and the isolation valves are open.

A

True.

66
Q

The cabin zone temperature sensors are ventilated by the air extracted by the lavatory and galley fans.

A

True.

67
Q

Placing the BLOWER push button to override:

A

De-energizes the blower fan.

68
Q

Pressurization indications are found on which ECAM page(s)?

A

The in-flight ECAM cruise page and the CAB PRESS page.

69
Q

How many outflow valves are there?

A

One valve with two doors.

70
Q

At what cabin altitude do you get an ECAM warning?

A

9,550 feet

71
Q

When the pack flow control knob is positioned to HI, air flow is:

A

120% of normal rate.

72
Q

If you select a position other than the AUTO detent on the LDG ELEV AUTO selector, how can you see the actual landing elevation value?

A

On the ECAM CRUISE or the PRESS page.

73
Q

What will cause the ENG BLEED fault light to come on?

A

Overpressure (downstream of bleed valve)
Bleed overheat
Wing or engine leak on associated side.

74
Q

What does the CARGO HEAT HOT AIR FAULT light indicate?

A

A duct overheat is detected.
The Aft Cargo Pressure Regulating valve closes.
The system will reset if the ISOL VALVE switch is ON.

75
Q

During Ground function operation, the outflow valve is:

A

Fully open.

76
Q

The outflow valve is powered by:

A

One of three electric motors.

77
Q

The purpose of the safety valve is to avoid:

A

Excessive negative differential.

Excessive positive pressure differential.

78
Q

When landing elevation is set to AUTO, the landing elevation is sent to the controller from:

A

FMGS.

79
Q

The mixing unit is connected to:

A

Packs, cabin air, emergency ram air inlet and Lp ground connector

80
Q

Once set to “ON” the air conditioning packs operate:

A

Automatically and independently of each other

81
Q

Emergency ram air inlet. When set to ?ON? the ram air valve will open and supply airflow:

A

Diff. press < 1 psi, and ditching not selected

82
Q

Cond. Zone regulator fault (primary channel failed):

A

Cabin zone is at fixed temperature

83
Q

Temperature control is automatic and is regulated by:

A

Zone controllers, pack 1 and 2 controllers

84
Q

If a pack controller fails (primary and secondary channel failure), the pack outlet air temperature is controlled by:

A

Anti-ice valve

85
Q

The zone controller optimizes temperature by action on:

A

Trim air valve

86
Q

When using APU bleed to supply the packs, with the pack flow selector at LO, the pack airflow is:

A

120% of normal

87
Q

The pack flow control valve closed automatically in case of:

A

Pack overheat, engine starting, or operation of the fire or ditching push button

88
Q

In case of trim air system fault (zone controller primary channel failure), the secondary channel of the zone controller regulated the zone temperature at:

A

24 deg.C

89
Q

In case of total zone controller failure:

A

Hot air and trim air valves close and packs deliver air at a fixed temperature (20 deg.C pack 1 and 10 deg.pack2)

90
Q

During landing run, Ram Air Inlet flaps open when speed is less than:

A

70 kts (after 20 seconds delay)

91
Q

The ditching switch when selected sends a closure signal to:

A

Ram air inlet and ventilation extract valves
Outflow valve
The pack flow control valves

92
Q

In flight with pressure controller 1 in use, if it fails:

A

Transfers automatically to controller 2

93
Q

In normal operation, pressurization is:

A

Fully automatic

94
Q

During ground function operation, the outflow valve is:

A

Fully open

95
Q

To see the operation of the outflow valve, it is necessary to call ECAM:

A

Press page

96
Q

Two identical, independent, automatic digital pressurization controllers are used for system control:

A

One controller active, one in standby

97
Q

Which controller generates excess cabin altitude and pressure signals for ECAM indication in manual mode:

A

No.1

98
Q

The safety valves are operated:

A

Pneumatically

99
Q

The purpose of the safety valves is to avoid:

A

Excessive positive differential pressure

100
Q

When mode selector is selected to manual, the outflow valve is controlled by signals sent via controller 1 or 2

A

False

101
Q

On ECAM Cab. press page, the outflow valve indicator changes to amber if:

A

It is fully open in flight

102
Q

On ECAM Cab. press page, the safety valve indication changes to amber if:

A

One safety valve is open.

103
Q

On ECAM Cab. press page, the cabin altitude indication changes to red when cabin altitude is:

A

> 9,550 ft

104
Q

Following a system 1 fault:

A

System 2 takes over automatically without any crew action

105
Q

The pressure safety valve opens at:

A

8.6 psi

106
Q

After the engine start, the Pack Flow Control Valves automatically open, however on the ground, reopening of the valves is delayed for _____ after the first engine start.

A

30 seconds

107
Q

The Ram Air Inlet Flaps remain open during takeoff and landing to allow extra airflow during high power situations.

A

False

108
Q

The temperature of the air that exits the compressor section is displayed above the Pack Flow. It normally displays green, but displays amber for temperatures over:

A

230 deg.C

109
Q

The trim air valves are _____ controlled by the zone controller

A

Electrically

110
Q

The avionics ventilation system is not capable of using external air to provide cooling airflow

A

False.

111
Q

During flight below _____, the Ram Air Valve can provide an emergency source of conditioned air during non-pressurized flight.

A

10,000 feet

A320-AirCond&Pressurization (3 decks)

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