APU Flashcards

1
Q

Kva rating

A

90 kva thereforer sufficient to power entire ac

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2
Q

APU start limit altitude for ground start and operation

A

-2,000 up to 14,600ft

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3
Q

APU bleed air supply altitude and start limit on battery

A

Both 25k

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4
Q

APU supplies what

A

AC power 115b 90kva

Bleed air (up to 25k)

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5
Q

Fuel source

A

TK 3

Battery start Tk 4 (AC ESS powers 6 seconds earlier than number 3) plus x-feed 3+4

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6
Q

At what N speed does available on here

A

95%

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7
Q

Which battery used APU start

A

Batt 2 - 1 attempt

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8
Q

Where can you shut down the APU

A

FD
LMWS
Refuel panel
Ground power panel

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9
Q

How thin should the EGT light up

A

Within 45 secs

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10
Q

When you can you press the APU start button

A

When flap moving on SD

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11
Q

When do you start the stopwatch for APU start

A

When flap open on SD

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12
Q

APU start limits

A

1 start no cool
2 starts <5 mins 30 min
3 starts- 60 min

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13
Q

APU operating envelope

A

-2,000 - 14,600 for ground operations for ground start and operation

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14
Q

Up to what height can APU supply bleed air

A

25,000

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