APU Flashcards
1
Q
Are there any limitations associated with APU Bleed Air?
A
APU Bleed Air may not be used for wing engine anti ice.
2
Q
When is the APU dedicated fuel pump automatically activated?
A
The APU dedicated fuel pump is activated automatically if the left side of the fuel manifold is not pressurized and the APU MASTER SW pb is selected ON. Selecting the APU MASTER SW pb OFF closes the APU LP valve to cut off fuel to the APU.
3
Q
What is the electrical source for starting the APU?
A
The APU always starts via batteries.
4
Q
Why must the flight crew wait 3 minutes before activating APU Bleed?
A
The 3 minutes allow the seals to warm up and prevent fumes in the cabin.
