Limitation APU Flashcards

1
Q

How many APU start can you do ?

A

3 then wait for 60min

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2
Q

APU, what the max N speed ?

A

107%

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3
Q

APU, what is the max EGT for APU start, and APU running ?

A

1090°C for start

675°C for running

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4
Q

What is the maximum altitude at which the APU can be restarted on battery only (EMER ELEC) ?

A

25000ft

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5
Q

What is the limit altitude for the APU to provide bleed air and electrical power ? Engine restart ?

A

22500ft for single pack, 15000ft for dual pack
20000ft Eng restart
Elect only up to 41000ft

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