73.Which component controls the ignition and starting operation ?

588.What does the FWD SIOL VALVE pushbutton switch control?

587.When does the skin heat exchanger operate on ground?

586.When does the skin exchanger inlet bypass valve open?

585.How is the fwd cargo comartment ventilated?

584.What is the purpose of the avionics ventilation system in the avionics bay?

583.What is the purpose of the Avionics Equipment Ventilation Computer?

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

581.CABIN PRESS FAULT light comes on when:

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

579.Motor 3 is controlled from: