80-10-00  CRANKING Back

  1. System Function
    2.
    The cranking system controls the start and the stop sequence of the engines in the automatic and manual modes of operation. The modes of operation of the system are the:
    • Automatic engine start on the ground
    • Manual engine start on the ground
    • Automatic (relight) engine start in flight
    • Engine shut down (normal operation)

  2. System Components (Ref. Fig. 1)
    3.
    The primary components of the system are these ENGINE MANAGEMENT switches:
    • START MASTER switch
    • STAR LEFT/RIGHT switches
    • STOP LEFT/RIGHT switches
    • MANUAL START switch
    • MANUAL- START FUEL-ENRICH switch

  3. System Operation
    4.
    The ENGINE MANAGEMENT switches, together with the Integrated Electronic Control (IEC) computer, control the system. The electrical supplies to the system are through circuit breakers from the 28 V dc emergency busbar and the 28 V dc left and right battery busbars.

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