Air/Press/Vent Flashcards by Pavel Mareš

Following a pressurization SYSTEM 1 fault:
A. Master caution is activated and ECAM actions must be taken by the
crew
B. System 2 must be selected by the crew
C. System 2 takes over automatically without crew action

C. System 2 takes over automatically without crew action

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The safety valves are operated:
A. Electrically
B. Hydraulically
C. Pneumatically

C. Pneumatically

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Conditioned air is distributed to:
A. Cockpit, cargo bays, and cabin
B. Cockpit, forward and aft cabins
C. Cockpit, avionics bay, cabin

B. Cockpit, forward and aft cabins

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What is the max negative differential pressure for the cabin?
A. 0 PSI
B. 1 PSI
C. 2 PSI

B. 1 PSI

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Each one of the trim air valves optimize the temperature by:
A. Adding hot air
B. Adding fresh air
C. Modulation of pack flow

A. Adding hot air

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What happens when the heating or cooling demand on one zone cannot be satisfied?
A. Engine thrust must be increased manually
B. The minimum idle is increased automatically
C. In any case, flight idle is sufficient

B. The minimum idle is increased automatically

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Is it possible to use simultaneously Packs and LP ground unit
during long stops on a hot day?
A. Yes
B. No
C. Yes, if external temperature is > 50°c

B. No

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When the “ditching” switch is selected ON, a closure signal is
sent to:
A. The outflow valve and the pack flow control valves
B. The ram air inlet and ventilation inlet and extract valves
C. All answers are corrects

C. All answers are corrects

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The cabin zone temperature sensors are situated in the lavatory
extraction circuit and galley ventilation system.
A. True
B. False

A. True

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The RAM air switch should be used:
A. At any time
B. Only when diff press is less than 1 psi
C. When diff press is greater than 1 psi
D. Only after outflow valve is fully opened

B. Only when diff press is less than 1 psi

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When the landing elevation is set to AUTO, the landing
elevation is sent to the controller from:
A. FMGC
B. FCU
C. ADIRS

A. FMGC

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The temperature selectors are located in:
A. The cockpit
B. The cabin
C. Both

A. The cockpit

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To see the position of the outflow valve, it is necessary to call
ECAM:
A. COND page
B. BLEED page
C. PRESS page

C. PRESS page

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Cabin pressurization starts at:
A. Engine start
B. Take-off thrust application
C. Lift-off

B. Take-off thrust application

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In case of Pack Control valve failure:
A. Pack outlet temperature is controlled at fixed temperature
B. The pack is closed automatically

B. The pack is closed automatically

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The pack flow control valve closes automatically in case of:
A. Pack overheat, engine fire push button released, engine start,
ditching p/b pressed
B. Bleed valve failure, pack outlet pressure increase
C. A and b.

A. Pack overheat, engine fire push button released, engine start

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The purpose of the safety valve is to avoid:
A. Excessive positive differential pressure
B. Excessive negative differential pressure
C. A and B are correct

C. A and B are correct

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Temperature regulation is automatic and is controlled by:
A. Zone controller
B. Pack controllers
C. A and B

C. A and B

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In case of total zone controller failure: A. Hot air and trim air valves open and pack1 delivers air at fixed
temperature 15°c
B. Hot air and trim air valves close and pack 2 delivers air at fixed
temperature 15°c
C. Hot air and trim air valves close, packs deliver air at fixed
temperature (pack1 at 20°c and pack 2 at 10°c.)

C. Hot air and trim air valves close, packs deliver air at fixed
temperature (pack1 at 20°c and pack 2 at 10°c.)

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Hot air pressure regulating valve:
A. Regulates the pressure of hot air tapped upstream of the packs
B. Is spring-loaded open in the absence of air
C. Opens automatically in case of duct overheat

A. Regulates the pressure of hot air tapped upstream of the packs

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In automatic control mode, cabin pressurization is optimized
using information from:
A. FMGS cruise level, time to climb and static pressure information
B. Actual cruise level
C. Selected cabin altitude rotary switch and FMGS landing elevation

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A. FMGS cruise level, time to climb and static pressure information

If a pack N 1 controller fails, the pack outlet temperature is
regulated to:
A. 10°C
B. 18°C
C. Between 5°C and 30°C

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C. Between 5°C and 30°C

The outflow valve is powered in normal operation (no failure) by:
A. One out of two electric motors
B. One out of three electric motors
C. Three mechanically linked electric motors

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A. One out of two electric motors

RAM air inlet, when set to ON will open:
A. In any case
B. Provided ditching is not selected
C. Provided delta P < 1 PSI and ditching not selected

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C. Provided delta P < 1 PSI and ditching not selected

``` The safety valves open at: A. 8.06 PSI B. 8.6 PSI C. 9.0 PSI D. 7.6 PSI ```

B. 8.6 PSI

``` In case of pack controller failure, the pack outlet air temperature is controlled by: A. Pack by-pass valve B. Pack anti-ice valve C. Pack flow control valve ```

B. Pack anti-ice valve

Trim air valves are controlled by: A. The zone controller B. Anti-ice valve C. Hot air pressure regulating valve

A. The zone controller

In case of a CPC 1 failure in flight: A. Manual control has to be used B. The system transfers automatically to controller 2 C. Controller 2 must be manually selected D. Landing elevation must be set on the landing elevation knob

B. The system transfers automatically to controller 2

``` On ECAM PRESS page, the safety valve indication changes to amber if: A. Both safety valves are fully open B. Either safety valve is not closed C. Both safety valves are fully closed ```

B. Either safety valve is not closed

Once set to ON, the air conditioning packs operate: A. Automatically and independently of each other B. Manually and independently of each other C. Automatically, pack 1 as a master, pack 2 as a slave

A. Automatically and independently of each other

When Cabin Pressure Mode Sel is set to manual, the outflow valve is controlled by signals sent via controller 1 or 2: A. True B. False

B. False

Pack flow may be controlled from: A. The cockpit B. The cabin C. Both

A. The cockpit

Hot air “Fault” light illuminates on the Air Cond panel: A. The hot air press reg. Valve opens and the trim air valves close B. The hot air press reg. Valve closes and the trim air valves open C. The hot air press reg. Valve closes and the trim air valves close

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

``` When using APU bleed to supply the packs, with the pack flow selector at LOW, the pack air flow is: A. 80 % of normal B. Normal C. 120 % of normal ```

C. 120 % of normal

Pack controllers primary channel failure: A. The secondary computer operates as a back up mode and regulation is not optimized B. The secondary computer takes over C. Pack is lost

A. The secondary computer operates as a back up mode and regulation is not optimized

Pack flow control valve: A. Is pneumatically operated and electrically controlled B. Is electrically operated and pneumatically controlled C. Opens automatically during engine starting

A. Is pneumatically operated and electrically controlled

``` When bleed air is supplied by the APU, the pack flow is automatically selected to: A. High B. Normal C. Low ```

A. High

``` On ECAM PRESS page, the outflow valve indicator changes amber if: A. Fully closed B. Fully open in flight C. Fully open in ground ```

B. Fully open in flight

After a primary channel (Zone controller) failure: A. Cabin zone is at fixed temp 24°c. B. Packs deliver fixed temp air 15°c. C. Secondary channel replaces primary channel

A. Cabin zone is at fixed temp 24°c.

In normal operation, pressurization is: A. Fully automatic B. Manually controlled C. Both answers are corrects

A. Fully automatic

When RAM air p/b is set to “ON”, the outflow valve will fully open if: A. Delta P > 1.5 PSI B. Delta P < 3 PSI C. Delta P < 1 PSI

C. Delta P < 1 PSI

Which controller generates excess cabin altitude and pressure output for ECAM indication in manual mode: A. Both B. N°1 C. N°2

B. N°1

During ground operation, the outflow valve is: A. Fully open B. Fully closed C. Positioned according to FMGS demands

A. Fully open

``` On ECAM Press page, the cabin altitude indication changes to red when cabin altitude is: A. 14,000 FT B. 8,800 FT C. 9,550 FT ```

C. 9,550 FT

Hot air press reg valve has failed in open position: A. Optimized regulation is lost B. The temperature stays at the value selected when the failure occurs C. No effect

C. No effect

When APU is supplying the packs, the pack controller sends a demand signal to increase air flow when a zone temperature cannot be satisfied: A. To the pack ram air inlet flap B. To the APU ECB C. To the pack flow control valve

B. To the APU ECB

Pack controller secondary channel failure: A. No effect on pack regulation, back up mode is lost B. Pack is lost C. No effect

A. No effect on pack regulation, back up mode is lost

In case of Trim air system fault, the secondary channel of the zone controller regulates the zone temperature at: A. 14°C B. 24°C C. 15°C

B. 24°C

``` When the pack flow controller knob is positioned to HI, air flow is: A. 80 % OF NORMAL B. 150 % OF NORMAL C. 120 % OF NORMAL ```

C. 120 % OF NORMAL

What is the max normal cabin altitude: A. 8000' B. 9550' + 350' C. 14000'

A. 8000'

In case of zone controller primary and secondary channels failure, what temperatures are maintained by pack 1 and 2? A. 15°c both B. 25°c both C. 20°c pack 1 - 10°c pack 2 D. 24°c pack 1 - 15°c pack 2

C. 20°c pack 1 - 10°c pack 2

The mixing unit is connected to: A. Packs, cabin air, emergency ram air inlet and LP ground Connector B. Packs, emergency ram air inlet and LP ground connector C. Packs and cabin air

A. Packs, cabin air, emergency ram air inlet and LP ground Connector

Air/Press/Vent Flashcards

(52 cards)