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American Airlines A320 Systems > Pressurization > Flashcards

Pressurization Flashcards

1
Q

Which of the following DOES NOT provide input to the pressurization controllers?

Thrust Levers
LGCIUs
FADECs
ADIRUs

A

FADECs

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2
Q

The input provided by the Flight Management and Guidance Computers (FMGCs) enable the pressurization controllers to?

  • Know your current rate of climb.
  • Know when you are on the ground.
  • Know when you are commencing takeoff.
  • Know the planned cruise altitude and plan the cabin climb profile
    accordingly.
A

Know the planned cruise altitude and plan the cabin climb profile accordingly.

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3
Q

The following areas are not pressurized:

  • Radome and landing gear bays.
  • Cargo compartment.
  • Radome, landing gear bays, air conditioning compartment and tail.
  • Air conditioning compartment and tail.
A

Radome, landing gear bays, air conditioning compartment and tail.

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4
Q

The pressurization controllers use the elevation of your destination airport to plan the descent profile. In normal operations, this information is provided:

  • By the FMS database once you begin the descent.
  • By the FMS database once you enter the destination airport into the
    MCDU.
  • Only after the aircraft rate of descent is greater that 200 ft/min for 30
    seconds.
  • From the elevation selected using the LDG ELEV selector on the
    overhead CABIN PRESS panel.
A

By the FMS database once you enter the destination airport into the MCDU.

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5
Q

The two pneumatic pressurization safety valves:

  • Open automatically when it becomes necessary to relieve excess
    positive
    or negative cabin pressure differentials.
  • Open automatically when it becomes necessary to relieve excess
    positive
    cabin pressure differentials only.
  • Open automatically when it becomes necessary to relieve excess
    negative cabin pressure differentials only.
  • Are opened by using the DITCHING pb.
A

Open automatically when it becomes necessary to relieve excess positive OR negative cabin pressure differentials.

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6
Q

After landing, the active and standby pressurization controllers:

  • Automatic transfer occurs after 70 seconds.
  • Swap roles when TOGA is selected.
  • Continue to operate on the selected system.
  • Revert to manual mode.
A

Automatic transfer occurs after 70 seconds.

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7
Q

With the pressurization in manual mode, the outflow valve is now controlled by:

  • The thrust levers.
  • The MAN V/S control switch.
  • The PACK pb.
  • The LDG ELEV AUTO Dial.
A

The MAN V/S control switch.

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8
Q

With MODE SEL in MAN, moving the MAN V/S:

  • UP opens the outflow valve and DN closes it.
  • UP changes controllers and DN restores the previous controller.
  • UP raises the landing field elevation.
  • UP closes the outflow valve and DN opens it.
A

UP opens the outflow valve and DN closes it.

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9
Q

The ditching pushbutton is used to:

  • Close the outflow and safety valves.
  • Close all fuselage openings below the floatation line.
  • Close the outflow valve, vent valves.
  • Close the outflow flow valve.
A

Close all fuselage openings below the floatation line.

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10
Q

On landing, cabin altitude will be:

  • Field density altitude.
  • Field pressure altitude.
  • Slightly lower than field pressure altitude.
  • Slightly above field pressure altitude.
A

Slightly lower than field pressure altitude.

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11
Q

In Ground Mode, the outflow valve will:

  • Gradually open during landing rollout.
  • Remain partially open until both engines are shut down.
  • Fully open when the first engine is shut down.
  • Fully open after both engines are shut down.
A

Gradually open during landing rollout.

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12
Q

Pressurization Abort Mode:

  • Is activated in the event of an ATC reroute.
  • Opens the outflow valve if the aircraft aborts takeoff roll.
  • Is activated in the event of an aborted landing.
  • Is activated if aircraft must return to the departure airport after takeoff.
A

Is activated if aircraft must return to the departure airport after takeoff.

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13
Q

Which control would you use to manually switch from the automatic pressurization control to manual control?

  • Mode SEL to MAN.
  • MAN VS CTL - UP or DN.
  • Move LDG ELEV out of the AUTO Position.
    -Press LDG ELEV to release.
A

Mode SEL push button to MAN.

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14
Q

With the pressurization in manual mode, the outflow valve is now controlled by:

  • The MAN V/S control switch.
  • The LDG ELEV AUTO Dial.
  • The thrust levers.
  • The PACK pb.
A

The MAN V/S control switch

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15
Q

According to this CAB PRESS page:

  • The MAN V/S control switch.
  • The LDG ELEV AUTO Dial.
  • The thrust levers.
  • The PACK pb.
A

Controller #1 is active and controller #2 is in standby.

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16
Q

How many feet per minute is the cabin currently climbing?

A

250

17
Q

The cabin pressurization controllers receive information from the FMGCs for landing elevation. By reviewing the Cabin Pressurization page, you can verify this by:

  • No amber in LDG ELEV
  • CAB ALT 650 FT
  • CAB PRESS is white
  • LDG ELEV AUTO 650 FT
A

LDG ELEV AUTO 650 FT

18
Q

According to this CAB PRESS page:

  • Cabin pressure differential (delta p) is 7.2, the cabin vertical
    speed is 1000, and the current cabin altitude is 5200.
  • Cabin pressure differential (delta p) is 5.6, the cabin vertical
    speed is -500, and the current cabin altitude is 2500.
  • Cabin pressure differential (delta p) is 4.5, the cabin vertical
    speed is 250, and the current cabin altitude is 2700.
  • Cabin pressure differential (delta p) is 6.1, the cabin vertical speed is 0,
    and the current cabin altitude is 3750.
A

Cabin pressure differential (delta p) is 4.5, the cabin vertical speed is 250, and the current cabin altitude is 2700.

19
Q

According to this CRUISE page:

  • Cabin pressure differential (delta p) is 7.4, the cabin vertical speed is 0,
    and the current cabin altitude is 5650.
  • Cabin pressure differential (delta p) is 4.6, the cabin vertical speed
    is -650, and the current cabin altitude is 3850.
  • Cabin pressure differential (delta p) is 6.0, the cabin vertical speed is
    500, and the current cabin altitude is 4000.
  • Cabin pressure differential (delta p) is 2.3, the cabin vertical speed is
    850, and the current cabin altitude is 1000.
A

Cabin pressure differential (delta p) is 7.4, the cabin vertical speed is 0, and the current cabin altitude is 5650.

20
Q

On this CRUISE page, why is the cabin vertical speed indicator in an analog format?

  • The MODE SEL pb has been selected to MAN, and the
    pressurization system is being operated in the manual mode.
  • Cabin vertical speed has exceeded preset limits.
  • Cabin vertical speed is under automatic control.
  • It always looks like this.
A

The MODE SEL pb has been selected to MAN, and the pressurization system is being operated in the manual mode.

21
Q

True or False: If both controllers fail, operation is automatically transferred to manual control.

A

False

22
Q

How can you manually set the field elevation?

  • Pulling LDG ELEV selector out and dialing it against outer scale.
  • Through the FMCG.
  • Using manual pressurization mode.
  • Only through IRU-1.
A

Pulling LDG ELEV selector out and dialing it against outer scale.

23
Q

The ditching pushbutton is used to:

  • Close the outflow flow valve.
  • Close the outflow and safety valves.
  • Close the outflow valve, vent valves.
  • Close all fuselage openings below the floatation line.
A

Close all fuselage openings below the floatation line.

24
Q

In Ground Mode, the outflow valve will:

  • Remain partially open until both engines are shut down.
  • Gradually open during landing rollout.
  • Fully open when the first engine is shut down.
  • Fully open after both engines are shut down.
A

Gradually open during landing rollout.

25
Q

Pressurization Abort Mode:

  • Is activated in the event of an aborted landing.
  • Is activated in the event of an ATC reroute.
  • Opens the outflow valve if the aircraft aborts takeoff roll.
  • Is activated if aircraft must return to the departure airport after takeoff.
A

Is activated if aircraft must return to the departure airport after takeoff.

American Airlines A320 Systems (20 decks)

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