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Mark

Mark

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  • Mark
    Mark replied to the topic APU Faults in ATA 49 APU
    Editing
    APU Faults
    I'm not going to be of much help, but have you looked at the aircraft side wiring?

    Twisted pair shorts, either to each other, to shield, or to ground.
    High resistance on any wires from ECU to APU. Especially look at the speed sensor wiring.

    You seemed to have covered all the APU related items quite thoroughly.
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