Chapter 4 · ASM170/175 · 29 questions
The APU is equipped with a dedicated FADEC. (T/F)
When are electrical and pneumatic loading available during an APU start?
During the normal shutdown sequence APU bleed air is immediately removed and electrical power is removed after a 1 minute cooldown period, followed by a spooldown period. (T/F)
In flight the APU automatically shuts down for:
What is the APU used for?
What monitors and controls the APU?
How are the batteries used for APU start?
Is battery 1 necessary to start the APU?
How many batteries are required for normal APU start?
Which is the fuel source for the APU?
Which Fuel Pump is used for APU Start with Batteries ON Only?
Which Fuel Pump is used for APU Start with an AC powered aircraft?
Which Fuel Pump is used for APU Start with only the Right Engine Running?
Will the APU shut down automatically if the APU fails to start within the normal start cycle time?
What does moving the APU Selector Knob to OFF do?
Can the APU Pneumatics be used during the cool down period?
Can the APU electrical power be used during the cool down period?
If you need the APU 50 seconds into a shutdown, is there a way to get its use back?
Can the APU shutdown be cancelled?
How can the APU be shut down immediately?
What conditions will the APU automatically shutdown for on the Ground?
When does the Red Bar on the APU EMER STOP Button illuminate?
What happens when the APU EMER STOP Button is Pushed IN?
Does the cool down period apply to the APU EMER STOP Button?
In normal operations on the ground with the APU running it would be normal to see the fuel unbalanced with less fuel in which tank?
What is the altitude limit for an APU start?
The operational altitude limit for the APU is?
What is the APU operational limit for bleed?
What is the APU operational limit to assist an engine start?