Auxiliary Power Unit Flashcards
1
Q
What is the proper way to shut down the APU?
A
Press the STOP button
2
Q
During APU shutdown, when should the master knob be set to OFF?
A
When APU RPM is below 5%
3
Q
After setting the APU master knob to ON, how long should the pilot wait before selecting START?
A
Three seconds, while white box flashes around APU RPM indication
4
Q
Should the APU be shut down with a load or without a load?
A
With a load, or within 10 seconds of removing the load
5
Q
When is the APU capable of supplying electricity and pneumatics?
A
95% plus 7 seconds
6
Q
How long should be waited after APU start before applying pneumatic load?
A
Three minutes
7
Q
What will happen if the Fire Test button is held longer than ten seconds?
A
The APU will shut down if it is running
