A220 APU Exam With complete solution– Expert Verified | Latest Version | 100 Guaranteed Success

A220 APU Exam With complete solution– Expert Verified |
Latest Version | 100 Guaranteed Success

What systems are supported by the APU? - It provides an alternate source of AC
electrical power and bleed air for main engine starting and air conditioning.


Where are the APU indications displayed? - STATUS, AIR, ELEC, FUEL synoptic
pages.


What happens if the APU BITE test fails? - The FAIL light on the APU panel
illuminate a and the APU FAULT advisory message is displayed on the EICAS page.


How is the APU inlet door controlled? - By the APU Electronic Control Unit (ECU).


What is the power output of the APU generator? - 115 VA


What is the percent RMP is the APU ready for electrical and pneumatic loading? -
95%


How many AP starts may be attempted in one hour? - 3


What happens if the APU switch is selected off: A-under load B- when not under
load? - A: The ECU starts a 60 second cool down. Then shuts down.
B: The ECU immediately shuts down the APU.


When the 60 second APU cool down has finished what happens? - The ECU shuts
down the APU and closes the inlet door