580.In manual mode ,warnings and indications come from:

81.What is the main function of the APU ?

80.The starter motor assists the APU up to which speed ?

79.APU is running and APU bleed air system is in use. What happens if APU MASTER SW pushbutton is released out ?

78.When does the APU air intake flap open ?

77.When does the bleed load valve regulate ?

76.When are the IGVs commanded to the idle position ?

75.When does the surge control valve fully close ?

74.How do you check the oil quantity ?

73.Which component controls the ignition and starting operation ?

72.What are the three APU modules ?