IranAir

Question 1

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

Answer 1

Regardless of NO SMOKING and SEAT BELT switch position.

Question 2

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

Answer 2

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

Question 3

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

Answer 3

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

Question 4

in the event of a BMC failure;

Answer 4

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

Question 5

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

Answer 5

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

Question 6

The outflow valve opens;

Answer 6

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

Question 7

The ventilation system includes ventilation for;

Answer 7

The avionics, battery and lavatories and galleys.

Question 8

The pack flow control valve is;

Answer 8

Pneumatically operated and electrically controlled.

Question 9

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

Answer 9

To high , in order to help reduce the cabin temperature

Question 10

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

Answer 10

Closes , the cabin altitude drops

Question 11

Pressurization controllers receive inputs from

Answer 11

LGCIU , ADIRU , FMGS , and EIU.

Question 12

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

Answer 12

Closed

Question 13

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

Answer 13

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

Question 14

Aft cargo ventilation is controlled by

Answer 14

The cargo ventilation controller .

Question 15

How many pressurization controllers are installed on the A320 ?

Answer 15

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

Question 16

placing the BLOWER push button to override

Answer 16

de-energizes the blower fan

Question 17

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

Answer 17

Closed

Question 18

When does normal pressurization occur ?

Answer 18

Pressurization occurs during the takeoff roll

Question 19

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

Answer 19

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

Question 20

When is PACK FLOW HI automatically selected ?

Answer 20

APU supplying bleed air or one pack fails .

Question 21

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

Answer 21

All valves below the water line

Question 22

When does normal depressurization occur ?

Answer 22

It is complete three minutes after touchdown

Question 23

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 ?

Answer 23

Open

Question 24

Placing the EXTRACT push button to override :

Answer 24

Insures the extract fan will continue to be energized

Question 25

How can you change pressurization controllers during flight ?

Answer 25

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

Question 26

Which of the following statements is correct concerning conditioned air ?

Answer 26

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

Question 27

When would you select PACK FLOW to HI ?

Answer 27

Smoke removal or hot/humid conditions

Question 28

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

Answer 28

They automatically close

Question 29

What limitation is associated with the ram air valve ?

Answer 29

Do not open if cabin pressure is greater than 1 psi

Question 30

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

Answer 30

Closed

Question 31

the ram air valve :

Answer 31

must be manually activated

Question 32

The HOT AIR valve push button controls :

Answer 32

The hot air manifold

Question 33

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

Answer 33

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

Question 34

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

Answer 34

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

Question 35

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

Answer 35

To HIGH , in order to help reduce the cabin temperature

Question 36

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

Answer 36

The OUTFLOW valve

Question 37

ON the ground the cabin should be ….

Answer 37

depressurized .

Question 38

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

Answer 38

Manually adjust the out flow valve

Question 39

The unpressurized areas on A 320 are :

Answer 39

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

Question 40

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

Answer 40

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

Question 41

To use the APU bleed , the crew will select :

Answer 41

The APU BLEED p/b on AIR COND overhead panel

Question 42

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

Answer 42

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

Question 43

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

Answer 43

The system goes into smoke configuration and the blower fan stopped

Question 44

What happens to pack flow control valves during engine start ?

Answer 44

they automatically close

Question 45

The temperature of each aircraft zone is optimized by means of

Answer 45

TRIM AIR valve .

Question 46

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

Answer 46

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

Question 47

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

Answer 47

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

Question 48

What happens when a temperature selector rotary knob is adjusted ?

Answer 48

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

Question 49

What is the function of the ram air valve ?

Answer 49

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

Question 50

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

Answer 50

All valves below the water line

Question 51

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 .

Answer 51

TRUE

Question 52

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

Answer 52

The ECAM cruise page and the COND page

Question 53

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

Answer 53

Only the CAB PRESS page

Question 54

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

Answer 54

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

Question 55

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

Answer 55

Passing air through a skin heat exchanger

Question 56

How many trim air valves are there ?

Answer 56

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

Question 57

The RAM AIR switch should be used

Answer 57

Only when differential pressure is less than 1 psi

Question 58

What is the function of the Pack Flow selector ?

Answer 58

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

Question 59

What is the maximum altitude associated with the pressurization system

Answer 59

39,100 feet.

Question 60

Trim air valves are modulated by :

Answer 60

The zone controller

Question 61

Which statement is TRUE concerning the cargo compartment ventilation ?

Answer 61

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.

Question 62

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

Answer 62

TRUE

Question 63

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

Answer 63

TRUE

Question 64

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

Answer 64

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

Question 65

How many outflow valves are there ?

Answer 65

One valve with two doors

Question 66

At what cabin altitude do you get an ECAM warning ?

Answer 66

9,550 feet.

Question 67

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

Answer 67

120% of normal rate

Question 68

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 ?

Answer 68

On the ECAM CRUISE or the PRESS page.

Question 69

What does the CARGO HEAT HOT AIR FAULT light indicate ?

Answer 69

A duct overheat is detected

Question 70

During Ground function operation , the outflow valve is

Answer 70

Fully open

Question 71

The outflow valve is powered by

Answer 71

One of two electric motors .

Question 72

The purpose of the safety valve is to avoid :

Answer 72

Excessive positive pressure differential | Excessive negative differential

Question 73

The safety valves are operated :

Answer 73

pneumatically

Question 74

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

Answer 74

FMGS.

Question 75

Placing the avionics ventilation system in the smoke configuration:

Answer 75

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

Question 76

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

Answer 76

The ECAM cruise page and the COND page

Question 77

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

Answer 77

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

Question 78

What computers control the cabin and cockpit conditioned air?

Answer 78

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

Question 79

When would you select RAM AIR ON?

Answer 79

Dual pack failure or smoke removal

Question 80

when the BLOWER pushbutton is selected to OVRD;

Answer 80

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.

Question 81

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

Answer 81

The valve and trim air valves close automatically.

Question 82

In manual control of the pressurization

Answer 82

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

Question 83

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

Answer 83

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

Question 84

In Automatic Pressure Control Mode the controller normally uses :

Answer 84

Landing elevation and QNH from FMGC

Question 85

The hot air pressure regulating valve fails closed

Answer 85

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

Question 86

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

Answer 86

outflow valve is controlled by one system at a time

Question 87

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?

Answer 87

Open

Question 88

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

Answer 88

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

Question 89

What happens when temperature selector rotary knob is adjusted?

Answer 89

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

Question 90

Hot air’ FAULT’ light illuminates on the air conditioning panel

Answer 90

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

Question 91

The outflow valve is power by:

Answer 91

One of two electric motors

Question 92

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

Answer 92

FMGS.