JoeWinn 75/76 07A APU

An illuminated APU RUN Light indicates the _____
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Terms in this set (21)
An illuminated APU RUN Light indicates the _____
• APU is at operating speed

[7.15.1]
An illuminated APU FAULT Light indicates the _____ or the _____
• APU has automatically shut down
• APU Fuel Valve is not in the commanded position

[7.15.1]
The APU Switch OFF Position:
• Closes the _____
• Initiates the _____
• Shuts down the _____
• Resets the _____
• APU Bleed Air Isolation Valve, if open
• APU cooling cycle
• APU when cooling cycle complete
• Auto shutdown fault logic

[7.15.1]
The APU Switch ON Position:
• Opens the _____
• Activates the _____
• Powers the _____
• Permits the _____ if the _____
• APU Fuel Valve and Inlet Door
• AC or DC fuel pump
• APU controller
• APU Bleed Valve to open
• APU Bleed Switch is ON when the APU reaches operating speed

[7.15.1]
APU Bleed Air is available _____
• Up to approximately 17,000 feet

[7.30.1]
APU Electrical power is available _____
• Throughout the airplane operating envelope

[7.30.1]
An APU Start requires _____
• Both the APU and Acft Main Batteries

[7.30.1]
Fuel for the APU is supplied from the _____
• Left manifold

[7.30.1]
When the APU Selector is placed in the ON Position with no AC power available, a _____ is energized to start the APU
• Dedicated DC fuel pump

[7.30.1]
After starting the APU with no AC power available, when AC power becomes available, the _____ is signaled to operate regardless of _____ and the DC Fuel Pump is _____
• Left forward AC fuel pump
• Switch position
• Signaled off

[7.30.1]
Rotating the APU Selector to START begins the automatic start sequence opening the _____ and the _____ and energizing an _____• APU fuel valve • APU inlet door • AC or DC Fuel Pump [7.30.1]The APU Starter Duty Cycle is a _____• Max of 3 consecutive starts/attempts in a 60-minute period [7.30.1]If the APU Switch is inadvertently moved to OFF, but the RUN Light is still illuminated _____• Momentarily moving the APU Switch to START will cancel the shutdown signal [7.30.2]The APU will shut down without a cooling delay when the _____ or in the case of a _____ or _____ or when the _____• Fire Switch is pulled • Fire • Fault • APU Bleed Valve has been closed and the APU Switch is moved to OFF [7.30.2 and Ground School Instructor]Placing the Battery Switch OFF will shut down the APU _____• Only while on the ground [7.30.2]Shutting down the APU using the Battery Switch on the ground is not recommended because even though there will be a _____ there may not be _____ available• Cooldown cycle • APU fire detection [7.30.2]It is normal for the APU FAULT Light to illuminate _____• Momentarily during start & shut down [7.30.2]APU Fault Detection Circuitry is reset by _____• Placing the APU Switch to OFF [7.30.2]An APU Start requires the APU Battery for the _____• APU Starter [Systems Study Guide]An APU Start requires the Aircraft Battery for the _____• DC Fuel Pump • APU Fuel Valve • Fire Protection • Fault Circuitry [Systems Study Guide]The APU Generator OFF Light will not illuminate when the APU is shut down even though the _____• Switch is left ON [Handout]