A300 Classic SKV APU Flashcards
When does the APU shutdown automatically if a fire is detected?
On the ground only
APU bleed air is available up to?
20,000
What can the APU supply bleed air for?
Engine start to 20,000
What happens if the APU master switch is turned OFF prior to turning the APU bleed switch off?
APU will run for up to 60 seconds before shutting down
What does the amber FAULT light on the APU panel indicate?
APU auto shutdown occurred that was not initiated by the APU Master Switch
What does the ECB do to shut down the APU when the APU Master Switch is selected OFF?
It generates two false signals (EGT Overheat and N1 overspeed)
What does the blue AVAIL light on the APU panel indicate?
The AVAIL light only indicates “APU rpm > 95%”
Where does the APU normally get its fuel supply?
From the left fuel manifold
What can be used to start the APU on the ground, with engines not running?
The 3 aircraft batteries
APU bleed air can be used for which of the following?
Wing Anti-Ice
What happens if the APU ECB detects an APU fire while the aircraft is on the ground?
APU will auto shutdown and after 10 seconds will discharge the fire extinguisher
During STBY GEN operation, if an APU start is unsuccessful, why is it important to place the APU Master switch back to the OFF position?
To re-connect the DC portion of the standby generator and disconnect the 3 batteries from the DC Ess Bus
What does the APU fire detection loop arrangement consist of?
Two loops of one element each
When using the APU to supply pneumatic air during takeoff and go-around, what does it provide?
Increased aircraft performance during critical phases of flight
What can the APU provide if used during takeoff?
Provide bleed air for dual pack operation and wing anti-ice
