Normal shutdown of the APU should be accomplished by
Pushing the stop button
In the event of an APU fire on the ground, a _ second delay is allowed before an automatic APU shutdown is initiated
10
To start the APU the pilot must turn the APU master to on, wait _ seconds and the momentarily to start
3
Allow _ minutes for the APU to warm up before adding pneumatic load
3
The APU is a source of _ power
Pneumatic and Electrical