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QT A320 > ATA21 - Air conditioning / pressurisation / ventilation > Flashcards

ATA21 - Air conditioning / pressurisation / ventilation Flashcards

1
Q
  1. Following an ECAM CAB PRESS SYST 1 AMBER FAULT :
    MASTER CAUTION is activated and ECAM actions must be taken by the crew
    SYSTEM 2 must be selected by the crew
    SYSTEM 2 takes over automatically without crew action
A

SYSTEM 2 takes over automatically without crew action

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2
Q
  1. The safety valves are operated :
    Electrically
    Hydraulically
    Pneumatically
A

Pneumatically

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3
Q 
296. During landing run PACK AIR FLAPS open when speed is less than :
80 kts (after 30 sec delay)
70 kts (after 3 min)
70 kts (after 20 sec delay)
A

70 kts (after 20 sec delay)

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4
Q
  1. Conditioned AIR is distributed to :
    COCKPIT, CARGO BAYS, and CABIN
    COCKPIT, FORWARD and AFT CABINS
    COCKPIT, AVIONICS BAY, CABIN
A

COCKPIT, FORWARD and AFT CABINS

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5
Q
  1. What is the max negative differential pressure for the cabin :
    0 PSI
    1 PSI below ambient
    2 PSI above ambient
A

1 PSI below ambient

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6
Q
  1. TRIM AIR VALVE, each one optimizes the temperature by :
    Adding HOT AIR
    Adding FRESH AIR
    Modulation of PACK FLOW
A

Adding HOT AIR

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7
Q
  1. Engine flow demand, when the heating or cooling demand in one zone cannot be
    satisfied :
    The minimum IDLE must be increased manually
    The minimum IDLE is increased automatically
    In any case, flight IDLE is sufficient
A

The minimum IDLE is increased automatically

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8
Q 
301. Is it possible to use simultaneously PACKS and LP GROUND UNIT during long stops
on a hot airport :
Yes
No
Yes, if external temperature is > 50°C
A

No

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9
Q
  1. The DITCHING switch when selected ON, sends a closure signal to :
    The outflow valve and the pack flow control valves
    The RAM AIR inlet and ventilation inlet and extract valves
    Both answers are correct
A

Both answers are correct

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10
Q
  1. The cabin zone temperature sensors are ventilated by the air extracted by the lavatory
    and galleys extraction fans :
    True
    False
A

True

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11
Q 
304. The RAM AIR P/B should be used :
At any time
Only when DIFF PRESS is less than 1 PSI
When PRESS is greater than 1 PSI DIFF
Only after outflow valve is fully opened
A

Only when DIFF PRESS is less than 1 PSI

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12
Q 
305. When landing elevation is set to AUTO, the landing elevation is sent to the controller
from :
FMGS
FCU
ADIRS
A

FMGS

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13
Q
  1. The temperature selectors are located in :
    The cockpit
    The cabin
    Both answers are correct
A

The cockpit

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14
Q
  1. To see the position of the outflow valve it is necessary to call ECAM :
    COND PAGE
    BLEED PAGE
    PRESS PAGE
A

PRESS PAGE

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15
Q
  1. Cabin pre-pressurization starts at :
    Engine start
    TAKE-OFF power selection
    LIFT-OFF
A

TAKE-OFF power selection

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16
Q
  1. ACSC both channels failure :
    Pack outlet temperature is controlled between 5°C and 30°C by the ANTI-ICE
    VALVE
    The pack is lost
A

The pack is lost

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17
Q
  1. The pack flow control valve closes automatically in case of :
    PACK overheat, ENGINE FIRE PUSH BUTTON released , ENGINE START,
    DITCHING P/B pressed
    BLEED VALVE FAILURE, PACK OUTLET PRESSURE increase
    both answers are correct
A

PACK overheat, ENGINE FIRE PUSH BUTTON released , ENGINE START,
DITCHING P/B pressed

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18
Q
  1. Temperature control is automatic and is regulated by :
    ACSC 1
    ACSC 2
    Both answers are correct
A

Both answers are correct

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19
Q
  1. In case of total ZONE CONTROLLER failure :
    Hot air and TRIM AIR VALVES open and PACK 1 delivers air at fixed temperature
    (+24°C)
    Hot air and TRIM AIR VALVES close and PACK 2 delivers air at fixed temperature
    (+15°C)
    Optimized and back-up temp regulation is lost, PACKS deliver air at fixed
    temperature (PACK1 at +20°C and PACK 2 at +10°c)
A

Optimized and back-up temp regulation is lost, PACKS deliver air at fixed
temperature (PACK1 at +20°C and PACK 2 at +10°c)

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20
Q
  1. Hot air pressure regulating valve :
    Regulates the pressure of hot air tapped upstream of the packs
    Is springloaded open in the absence of air
    Opens automatically in case of duct overheat
A

Regulates the pressure of hot air tapped upstream of the packs

21
Q
  1. In automatic mode, cabin pressurization is optimized by using information from :
    FMGS cruise level, time to climb and static pressure information
    Actual cruise level, setting and landing elevation input
    Selected cabin altitude rotary switch and FMGS landing elevation
A

FMGS cruise level, time to climb and static pressure information

22
Q
  1. The outflow valve is powered by :
    One out of two electric motors
    One out of three electric motors
    Three mechanically linked electric motors
A

One out of three electric motors

23
Q
  1. Two identical independent automatic Cabin Pressure Controllers are used for cabin
    pressurization :
    One controller is active, one is in standby
    Both controllers are used by FMGS
    N°1 controller is for climb phase and N°2 controller is for CRUISE and DESCENT
A

One controller is active, one is in standby

24
Q
  1. Emergency RAM AIR inlet, when set to ON, the RAM AIR VALVE will open :
    In any case
    Provided ditching is selected
    If delta P < 1 PSI and ditching not selected
A

If delta P < 1 PSI and ditching not selected

25
Q
  1. The pressure safety valves open at :
  2. 06 PSI
  3. 6 PSI
  4. 0 PSI
26
Q
  1. In case of ACSC total failure :
    The pack outlet air temperature is controlled by Pack by-pass valve
    The pack outlet air temperature is controlled by Trim air valve
    Pack is lost
A

Pack is lost

27
Q
  1. Trim air valves are modulated by :
    ACSC
    Anti-ice valve
    Hot air pressure regulating valve
28
Q
  1. In case of CPC 1 FAILURE in flight :
    The system transfers automatically to CPC 2
    CPC 2 must be manually selected
    Landing elevation must be set on the landing elevation knob
A

The system transfers automatically to CPC 2

29
Q
  1. On ECAM CAB PRESS page, the SAFETY VALVE INDICATION changes to amber if :
    Both SAFETY VALVES are fully open
    One SAFETY VALVE is open
    Both SAFETY VALVES are fully closed
A

One SAFETY VALVE is open

30
Q
  1. When MODE SEL is set to MANUAL, the OUTFLOW VALVE is controlled by signals
    sent via CPC1 or 2 :
    True
    False
31
Q
  1. Pack flow may be selected from :
    The cockpit
    The cabin
    Both answers are correct
A

The cockpit

32
Q
  1. Hot air FAULT light illuminates on the air conditionning panel :
    The hot air press reg. valve opens and the trim air valves close
    The hot air press reg. valve closes and the trim air valves open
    The hot air press reg. valve closes and the trim air valves close
A

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

33
Q 
326. When using APU BLEED to supply the packs, with the pack flow selector at NORM,
the pack air flow is :
LOW (80% of normal)
NORMAL
HIGH (120% of normal)
A

HIGH (120% of normal)

34
Q
  1. One ACSC channel failure :
    The other channel operates as a back up mode and regulation is not optimized
    The other channel takes over
    Pack is lost
A

The other channel takes over

35
Q
  1. Pack flow control valve :
    Is pneumatically operated and electrically controlled
    Is electrically operated and pneumatically controlled
    Opens automatically during engine starting
A

Is pneumatically operated and electrically controlled

36
Q 
329. On ECAM CAB PRESS page, the outflow valve indicator changes to AMBER if outflow
is :
Fully closed
Open more than 95% during flight
Fully open on ground
A

Open more than 95% during flight

37
Q
  1. After a ACSC channel 2 failure :
    Cabin zones are controlled to 24°C by the other channel
    Packs deliver fixed temp air (15°C)
    Cabin zones are controlled at requested temperature by the other channel
A

Cabin zones are controlled at requested temperature by the other channel

38
Q
  1. in normal operation, pressurization is :
    Fully automatic
    Manually controlled
    Both answers are correct
A

Fully automatic

39
Q 
332. Which controller generates EXCESS CABIN ALTITUDE and PRESSURE OUTPUTS
for ECAM indication in manual mode :
Both answers are correct
CPC 1
CPC 2
40
Q
  1. During ground function operation, the outflow valve is :
    Fully open
    Fully closed
    Positionned according to FMGS demands
A

Fully open

41
Q 
334. On ECAM CAB PRESS page the cabin altitude indication changes to red when cabin
altitude is :
> 14 000 ft
> 8 800 ft
> 9 550 ft
A

> 9 550 ft

42
Q
  1. Hot air press reg. valve has failed in open operation :
    Optimised regulation is lost
    The temperature stays at the value selected when the failure occurs
    No effect
43
Q
  1. When APU is suppling the packs, the packs controller sends a demand signal to
    increase air flow when a zone temperature cannot be satisfied :
    To the pack RAM AIR inlet flap
    To the APU ECB
    Pack control valve
A

To the APU ECB

44
Q
  1. With a Pack controller secondary channel failure :
    No effect on pack regulation, back up mode is lost
    Pack is lost
A

No effect on pack regulation, back up mode is lost

45
Q
  1. When the pack flow control knob is positionned to HI, air flow is :
    80 % OF NORMAL
    150 % OF NORMAL
    120 % OF NORMAL
A

120 % OF NORMAL

46
Q
  1. What is the MAX NORM CAB ALT :
    8800 ft
    9550 ft
    14000 ft
47
Q
  1. During normal flight, skin temp < +32°C, the avionics ventilations system controls the
    temperature of the cooling air by :
    Adding air conditioned to the flow
    Passing air through a skin heat exchanger
    Adding AVIONICS BAY AIR
A

Passing air through a skin heat exchanger

48
Q
  1. Where do the WING ANTI-ICE indications appear on the ECAM ?
    There is no indication on ECAM PAGE for WING ANTI-ICE system
    ANTI-ICE appears in white on the ECAM BLEED page when the WING ANTI-ICE
    P/B is ON
    A green triangle appears in the ECAM BLEED page when the WING ANTI-ICE P/B
    is OFF
A

ANTI-ICE appears in white on the ECAM BLEED page when the WING ANTI-ICE
P/B is ON

QT A320 (21 decks)

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