Before you do this procedure, engage the ramp service door safety connector pin.

发布于 2021-04-24 02:25:16
【单选题】
A Firstly you should perform this procedure then you can engage the ramp service door safety connector pin. to
B Insert the pin of the apron service door security connector,then you can perform this procedure.
C The ramp service door safety pin should not be engaged until you start this procedure.

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