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Jason Boeing 787 Dreamliner > Air Systems > Flashcards

Air Systems Flashcards

1
Q

What temperature is commanded when the cabin temperature controller is at the 12 o’clock position?
• 65-85 degrees.
• 65-75 degrees.
• 70 degrees.
• 75 degrees.

A

• 75 degrees.

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2
Q

Recirculation fans MUST remain ON during hot weather operations unless a non- normal checklist directs otherwise.
A True
B. False

A

A. True

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3
Q

What does the “PACK MODE” EICAS message mean?
• a pack has tripped and requires resetting
• a pack component has failed and the pack has reverted to standby cooling.
• a bleed leak has been detected and the pack has shut down
• the associated pack is operating at maximum capacity

A

• a pack component has failed and the pack has reverted to standby cooling.

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4
Q

What are the uses of engine bleed air?
A. TAT probe aspiration
B. Engine anti-ice
C. Engine core heat
D. Both B and C

A

D. Both B and C

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5
Q

The forward cargo compartment is heated by ____?
• Forward equipment ventilation system discharge air
• Forward cargo bleed air duct
• Electric heaters in the cargo compartment
• Cabin overflow air

A

• Forward equipment ventilation system discharge air

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6
Q

The source of heat for the Bulk cargo compartment is:
• An insulated thermal blanket.
• PECS heat exchangers in the cargo compartment
• Cabin overflow air
• Aft equipment cooling system discharge air in conjunction with an inline electric heater.

A

• Aft equipment cooling system discharge air in conjunction with an inline electric heater.

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7
Q

What are the indications of a loss of forward equipment cooling on the ground? A. A horn sounds in the nose wheelwell
B. EQUIP COOLING FWD EICAS message
C. Both A and B are correct
D. Equipment cooling does not operate on the ground

A

C. Both A and B are correct

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8
Q

Where does the pressurization system normally get flight operating parameters?
A. From ambient pressure.
B. From the FMC flight plan data
C. From the settings on the overhead pressurization panel D. Both A and B are correct.

A

D. Both A and B are correct.

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9
Q

If the EICAS message PACK (L, R) is displayed, an attempt to restore pack operation may be made by pressing the AIR COND RESET switch.
A. True
B. False

A

A. True

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10
Q

Which of the following is true concerning pack operation in the “Standby Cooling” mode?
A. For certain internal malfunctions, a pack automatically enters the Standby Cooling mode.
B. In Standby Cooling the pack shuts down at lower altitudes and higher outside air temperatures when ambient conditions do not permit standby cooling.
C. Decreased pack cooling capacity may result in warm flight deck or cabin
temperatures at lower altitude.
D. All the above

A

D. All the above

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11
Q

The two outflow valves are identical and either valve is capable of full airflow and pressurization control. If either valve fails full open, loss of pressurization will occur.
A. True
B. False

A

A. True

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12
Q

In flight, the APU is available as an alternate bleed source.
A. True
B. False

A

B. False

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13
Q

When a pack overheat is detected:
• The pack switches to standby cooling
• The pack flow rate is modulated to keep the pack outlet temperature low
• The pack automatically shuts down
• The pack automatically switches pack controllers

A

• The pack automatically shuts down

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14
Q

With loss of inputs from the flight deck or cabin temperature controls, the pack(s) will:
• Modulate to keep pack outlet temperature between 40 -110 F.
• Keep pack outlet temperature within 20 degrees of TAT.
• Automatically shut down.
• Maintain a cabin temperature of 75 F.

A

• Maintain a cabin temperature of 75 F.

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15
Q

The forward equipment cooling system provides ventilation to:
• the forward lavatories and galleys.
• the bulk cargo compartment.
• the passenger video equipment.
• the E/E bay and electronic equipment on the flight deck.

A

• the E/E bay and electronic equipment on the flight deck.

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16
Q

Landing altitude barometric pressure correction comes from:
• the Captain’s altimeter setting.
• the FMC.
• the standby altimeter setting.
• the First Officer’s altimeter setting.

A

• the Captain’s altimeter setting.

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17
Q

Pushing the AIR COND RESET switch will:
A. Attempt to reset a failed recirculation fan.
B. Attempt to reset a failed (tripped) pack.
C. Reset all cabin zone temperatures to 75 degrees.
D. Both A and B are correct.

A

D. Both A and B are correct.

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18
Q

Why should the cabin temperature selector initially be set to the 12 o’clock position?
A. To set the maximum temperature in any zone.
B. To allow full temperature range adjustment (65 - 85 F) in cabin zones on the cabin attendant’s panel.
C. To prevent cabin overheat during low altitude flight.
D. All the above.

A

B. To allow full temperature range adjustment (65 - 85 F) in cabin zones on the cabin attendant’s panel.

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19
Q

What determines the pack outlet temperature?
• The average demand of all the systems.
• The master cabin temperature control.
• The zone requesting the warmest temperature.
• The zone requesting the coldest temperature.

A

• The zone requesting the coldest temperature.

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20
Q

When does the bulk cargo fan operate?
• When AUTO is selected on the bulk cargo temp switch.
• When LOW is selected on the bulk cargo switch.
• When OAT is between 65 - 75 degrees.
• When an aft cargo fire is detected.

A

• When AUTO is selected on the bulk cargo temp switch.

21
Q

Pulling the Landing Altitude (LDG ALT) selector:
A. Displays pressurization systems indications on the EICAS display.
B. Automatically limits the cabin climb and descent to 300 ft/min.
C. Overrides the FMC altitude inputs to the cabin altitude controllers.
D. Both A and C.

A

D. Both A and C.

22
Q

What has occurred when the FWD CARGO TEMP “OFF” light is illuminated amber?
A. FWD E&E cooling is in override.
B. A fire has been detected in the FWD CARGO compartment.
C. The FWD E&E exhaust fan is inoperative.
D. Any of the above.

A

D. Any of the above.

23
Q

When is APU bleed air supply primarily used?
• There is no APU bleed air capability on the B787.
• Used primarily during ground operations.
• In flight above 28,000 ft.
• Engine starting

A

• There is no APU bleed air capability on the B787.

24
Q

How does the automatic pressurization system keep “pressure bumps” from occuring during takeoff?
A. For takeoff, the system supplies a small positive pressure for smooth cabin altitude transitions.
B. During takeoff, both outflow valves remain closed until the aircraft altitude reaches 2000 ft.
C. Pressure relief valves provide a smooth transition from takeoff to inflight operations.
D. Both B and C .

A

A. For takeoff, the system supplies a small positive pressure for smooth cabin altitude transitions.

25
Q

The use of only one A/C pack is recommended for normal ground operations.
A. True
B. False

A

B. False

26
Q

Outside airflow to the cabin during normal operations may be reduced by:
• selecting a higher master cabin temperature.
• the flight attendants based on the number of occupants in the cabin.
• ensuring the UPPER and LOWER recirculation fans are ON.
• outside airflow cannot be changed.

A

• the flight attendants based on the number of occupants in the cabin.

27
Q

Do the flight deck and passenger cabin temperature selectors on the air conditioning panel have a manual temperature control position?
• No, neither one can be controlled manually.
• Yes, both can be controlled manually.
• The flight deck does, however the passenger cabin does not.
• The passenger cabin does, however the flight deck does not.

A

• No, neither one can be controlled manually.

28
Q

The lavatory/galley ventilation system provides smoke control for the lavs and crew rest compartments and ventilation air for the lav/galley areas.
A. True
B. False

A

A. True

29
Q

With the FWD and BULK CARGO TEMP switches set to AUTO, the compartment temperature is maintained to approximately ____ F.
A. 60
B. 70
C. 80
D. None of the above.

A

B. 70

30
Q

The forward cargo compartment is heated by:
• Engine bleed air from the wing anti-ice distribution duct.
• Recycled hot air from the aft cargo compartment.
• Forward equipment ventilation system.
• The compartment is not heated.

A

• Forward equipment ventilation system.

31
Q

The aircraft pressurization system is operated in the manual mode by:
A. Setting the OUTFLOW VALVE switches to MAN.
B. Operates only automatically.
C. Selecting the related OUTFLOW VALVE MANUAL switches to OPEN or CLOSE as required .
D. A and C

A

D. A and C

32
Q

When using the Landing Altitude selector, the manual landing field selection limits are:
• There are no limits
• 2,000 feet below sea level to 14,000 feet above sea level
• 1,000 feet below sea level to 10,000 feet above sea level
• Only set through the Left TCP

A

• 2,000 feet below sea level to 14,000 feet above sea level

33
Q

When is the pack OFF light illuminated amber?
A. During engine start
B. When there is a pack or compressor outlet high temperature condition.
C. When manually selected to OFF
D. All the above

A

D. All the above

34
Q

How does the trim air system meet zone temperature requirements?
• It controls pack air temperature
• It cools conditioned air
• By controlling upper recirculation fan air
• It heats conditioned air

A

• It heats conditioned air

35
Q

The alternate ventilation system ____
• may only be used during pressurized flight.
• provides an alternate means of pressurizing the cabin in the event both packs fail.
• provides an alternate means of ventilating the cabin in the event both packs are inoperative.
• is designed to maintain the forward and aft electronics bay at a controlled maximum temperature with the loss of two or more CACs

A

• provides an alternate means of VENTILATING the cabin in the event both packs are inoperative.

36
Q

How can passenger cabin humidity be controlled in flight?
• By turning OFF the lower recirculation fans.
• System is automatic and has no manual controls.
• Through the “% Humidity” selection on the Flight Attendant cabin control panel
• By selecting the Flight Deck dehumidifier OFF for no more than 10 minutes per hour while inflight

A

• System is automatic and has no manual controls.

37
Q

Live animals may be carried in any of the three cargo compartments.
A. True
B. False

A

B. False

38
Q

Cabin Air Compressor (CAC) operations may be limited during electrical load shed operations.
A. True
B. False

A

A. True

39
Q

During engine starts, both packs shut down and do not restart until:
• 30 seconds after either engine annunciates RUNNING on EICAS
• 2 minutes after the start is initiated and engine(s) is running.
• both engines reach 50%
• the A/C reset switch on the overhead panel is pushed.

A

• 2 minutes after the start is initiated and engine(s) is running.

40
Q

During cruise flight, the maximum cabin altitude during normal operations is ___
• 10,000 ft
• 6,000 ft
• 8,000 ft
• 7,000 ft

A

• 6,000 ft

41
Q

If the cruise altitude from the FMC (while in AUTO pressurization) is unavailable, the default cruise altitude will be
• 43,000 ft
• 30,000 ft
• 44,000 ft
• 35,000 ft

A

• 43,000 f

42
Q

When checking the PECS coolant level during preflight, the expected normal service level is ____
• 1.0
• 100.0
• 75.0
• 1.2 or above

A

• 1.0

43
Q

Flight deck humidity operates when the HUMID switch is ON and:
• on the ground only.
• engine anti-ice is OFF.
• below 10,000 ft.
• in cruise flight and approximately 1 - 1.5 hours prior to touchdown.

A

• in cruise flight and approximately 1 - 1.5 hours prior to touchdown.

44
Q

The CAC deflector doors may retract when the ambient air temperature is below 35 degrees F or above 95 degrees F.
A. True
B. False

A

A. True

45
Q

Airflow from the CACs to the packs may be regulated from the flight deck.
A. True
B. False

A

B. False

46
Q

Additional cabin cooling and reduced power required by the CACs is provided by the:
• PECs.
• Lower recirculation system.
• E&E supply fan.
• External air.

A

• Lower recirculation system.

47
Q

Turning the recirculation fans OFF does not increase the amount of fresh air to the cabin, but actually decreases air flow.
A. True
B. False

A

A. True

48
Q

The recirculation fans draw air from the cabin through filters, then reintroduce it into the cabin distribution ducts.
A. True
B. False

A

A.True

Jason Boeing 787 Dreamliner (19 decks)

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