582.Where does the LAV and GALLEYS ventilation air come from?

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 ?

71.Which components are installed on the combustion chamber ?

70.Of what kind of design is the compressor ?