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A320-AirCond&Pressurization > IranAir > Flashcards

IranAir Flashcards

1
Q

In the event of excessive cabin altitude (11300 feet) , the NO SMOKING FASTEN SEAT BELT and EXIT sings illuminate;

A

Regardless of NO SMOKING and SEAT BELT switch position.

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2
Q

When air bleed pressure and temperature of the IP air are too low;

A

The system uses bleed air from the HP stage and maintains it at 36+/-4 psi.

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3
Q

the air cycle machine fails (seized) can the pack still be used in flight?

A

Yes. The pack can still be operated in the heat exchanger cooling mode

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4
Q

in the event of a BMC failure;

A

The alternate BMC takes over monitoring of the bleed air system, and the associated
bleed valve does not close automatically.

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5
Q

What happens when the primary and secondary channel of a pack controller fails?

A

The packs deliver a fixed temperature of 20 deg C for pack 1 and 10 deg C for
pack 2.

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6
Q

The outflow valve opens;

A

When the MODE SEL is MAN V/S toggle switch is pressed UP.

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7
Q

The ventilation system includes ventilation for;

A

The avionics, battery and lavatories and galleys.

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8
Q

The pack flow control valve is;

A

Pneumatically operated and electrically controlled.

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9
Q

With a full load of PAX and in a high temperature area , how should the pack flow be set ?

A

To high , in order to help reduce the cabin temperature

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10
Q

On the cabin press panel , with the man V/S CTL held in the DN , the position of the outflow valve ……

A

Closes , the cabin altitude drops

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11
Q

Pressurization controllers receive inputs from

A

LGCIU , ADIRU , FMGS , and EIU.

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12
Q

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

A

Closed

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13
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

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14
Q

Aft cargo ventilation is controlled by

A

The cargo ventilation controller .

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15
Q

How many pressurization controllers are installed on the A320 ?

A

Two : independent controllers . they both operate in the automatic mode

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16
Q

placing the BLOWER push button to override

A

de-energizes the blower fan

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17
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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18
Q

When does normal pressurization occur ?

A

Pressurization occurs during the takeoff roll

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19
Q

Pressurization is normally automatic on the A320 . can you interfere with it ?

A

Yes , manually set landing elevation using the LND ELEV AUTO selector

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20
Q

When is PACK FLOW HI automatically selected ?

A

APU supplying bleed air or one pack fails .

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21
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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22
Q

When does normal depressurization occur ?

A

It is complete three minutes after touchdown

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23
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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24
Q

Placing the EXTRACT push button to override :

A

Insures the extract fan will continue to be energized

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25
Q

How can you change pressurization controllers during flight ?

A

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

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26
Q

Which of the following statements is correct concerning conditioned air ?

A

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

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27
Q

When would you select PACK FLOW to HI ?

A

Smoke removal or hot/humid conditions

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28
Q

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

A

They automatically close

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29
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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30
Q

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

A

Closed

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31
Q

the ram air valve :

A

must be manually activated

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32
Q

The HOT AIR valve push button controls :

A

The hot air manifold

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33
Q

Under what conditions should be PACKFLOW controller be set to HI ?

A

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

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34
Q

The PACK FLOW controller is set to NORM and 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

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35
Q

With a full load of passengers and in high temperature area , how should the pack flow be set ?

A

To HIGH , in order to help reduce the cabin temperature

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36
Q

In AUTO , the cabin differential pressure is normally controlled by …

A

The OUTFLOW valve

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37
Q

ON the ground the cabin should be ….

A

depressurized .

38
Q

The MODE SEL p/b SW in MAN mode allows you to use the MAN V/S CLT in order to ….

A

Manually adjust the out flow valve

39
Q

The unpressurized areas on A 320 are :

A

Tail cone gear bay , radome .Nose gear bay , air conditioning packs

40
Q

On the CABIN PRESS panel with a LDG. ELEV . set manually , is there still an automatic control of the cabin altitude :

A

Yes .sys1 is still controlling the cabin altitude through the out flow valve

41
Q

To use the APU bleed , the crew will select :

A

The APU BLEED p/b on AIR COND overhead panel

42
Q

When can we have a close circuit configuration in normal operation ?

A

The aircraft must be in the air , or on the ground With the thrust levers at T/O and the skin temp. below a given threshold

43
Q

With both the BLOWER and EXTRACT pushbutton switches in OVRD , what happens to the ventilation system ?

A

The system goes into smoke configuration and the blower fan stopped

44
Q

What happens to pack flow control valves during engine start ?

A

they automatically close

45
Q

The temperature of each aircraft zone is optimized by means of

A

TRIM AIR valve .

46
Q

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

A

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

47
Q

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

A

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

48
Q

What happens when a temperature selector rotary knob is adjusted ?

A

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

49
Q

What is the function of the ram air valve ?

A

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

50
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

51
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

52
Q

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

A

The ECAM cruise page and the COND page

53
Q

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

A

Only the CAB PRESS page

54
Q

How many temperature selector are there on the A320 ? how many temperature zone are there ?

A

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

55
Q

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

A

Passing air through a skin heat exchanger

56
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.

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

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

59
Q

What is the maximum altitude associated with the pressurization system

A

39,100 feet.

60
Q

Trim air valves are modulated by :

A

The zone controller

61
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.

62
Q

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

A

TRUE

63
Q

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

A

TRUE

64
Q

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

A

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

65
Q

How many outflow valves are there ?

A

One valve with two doors

66
Q

At what cabin altitude do you get an ECAM warning ?

A

9,550 feet.

67
Q

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

A

120% of normal rate

68
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.

69
Q

What does the CARGO HEAT HOT AIR FAULT light indicate ?

A

A duct overheat is detected

70
Q

During Ground function operation , the outflow valve is

A

Fully open

71
Q

The outflow valve is powered by

A

One of two electric motors .

72
Q

The purpose of the safety valve is to avoid :

A

Excessive positive pressure differential

Excessive negative differential

73
Q

The safety valves are operated :

A

pneumatically

74
Q

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

A

FMGS.

75
Q

Placing the avionics ventilation system in the smoke configuration:

A

de-energizes the blower fan, extract fan runs, opens the air conditioning extract valves

76
Q

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

A

The ECAM cruise page and the COND page

77
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.

78
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.

79
Q

When would you select RAM AIR ON?

A

Dual pack failure or smoke removal

80
Q

when the BLOWER pushbutton is selected to OVRD;

A

The system is in closed –circuit configuration and adds air from the air-conditioning system to the ventilation air. The blower fan is stopped and the extract fan continues to run.

81
Q

What happens when the HOT AIR pushbutton FAULT light and associated ECAM warning come on?

A

The valve and trim air valves close automatically.

82
Q

In manual control of the pressurization

A

If the V/S CTL is selected to UP the outflow valve opens and the cabin altitude increase

83
Q

What happens when the secondary channel of a pack controller fails?

A

No effect on pack regulation. Backup mode is lost. ECAM signals related to corresponding pack are lost

84
Q

In Automatic Pressure Control Mode the controller normally uses :

A

Landing elevation and QNH from FMGC

85
Q

The hot air pressure regulating valve fails closed

A

Optimized regulation is lost . Pack 1 controls the cockpit temperature to the selected .

86
Q

On cabin press panel, when mode select is in the auto position :

A

outflow valve is controlled by one system at a time

87
Q

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

A

Open

88
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.

89
Q

What happens when temperature selector rotary knob is adjusted?

A

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

90
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

91
Q

The outflow valve is power by:

A

One of two electric motors

92
Q

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

A

FMGS.

A320-AirCond&Pressurization (3 decks)

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