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Other 87 Materials > APU > Flashcards

APU Flashcards

Apu Mastery

1
Q

Apu supplies power for ?

A

Normal Grd Ops
+
Starting Eng

Auxilary Pwr source for Inflight

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2
Q

Apu operate in which 2 modes?

A

Attended & Unattended mode

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3
Q

Apu Attended mode means?

A

Either eng Start or running in flight

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4
Q

Apu unattended mode means?

A

On ground ops

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5
Q

Apu use how many ASG’s (Apu Starter Generator) to start + supply Electric Pwr?

A

2

Min of 1 is required

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6
Q

Apu can be started and operated up to which Alt?

A

43,100 ft

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7
Q

Power output of APU Generator Degrades as Altitude increase due to:

A

Turbine Performance

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8
Q

Apu Generator output is only

A

1/4 of sea level output

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9
Q

Fuel for APU is supplied from Left main tank if:

A

Airplane pwr is not available
or
Airplane fuel pump with AC pwr not available

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10
Q

If Apu is auto started due to power loss and power is restored, How should you turn off the APU?

A

APU on then off

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11
Q

The Apu can be started by which available power?

A

Ext Pwr
Main Generators
Apu Battery

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12
Q

To start Apu, it uses 1 of 2 ASG when?

A

A/C pwr is Available

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13
Q

To start APU on the battery must be on. T or F?

A

True

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14
Q

Apu Battery + Main Batter supplies power to start APU when?

A

No AC pwr available

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15
Q

When APU Selector is set to off what will happen

A

Apu Cooling Dn Eicas for 2 mins

Apu Stops

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16
Q

When Apu Stops what happens?

A

Apu Cooling Dn Eicas -Remove
Fuel Valve close
Fuel Pump stop

17
Q

Apu Limit Message means?

A

Apu more than normal limit
or
Apu autoshut down

18
Q

Apu fault message mean?

A

Apu Shutdown

19
Q

Do Apu Auto shutdown have Cool down period?

A

No

20
Q

When Apu limit message is shown, it will continue to operate so you must?

A

Manually turn it off

&

It will have no cool down period

21
Q

Apu autostart occurs regardless of Apu selector position when?

A

Loss 3 or more Engine Generators

Other 87 Materials (25 decks)

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