关于复位跳开关的疑惑

737系列的QRH里说:“除非在非正常检查单中有要求,一般不建议机组循环操作(拨出再复位)跳开关来清除非正常情况。”

但是737的机组训练手册里说:“在非正常检查单未规定的情况下,尝试通过循环系统操作或跳开关来复位系统。”

在空中,如果出现了QRH上没有说明的故障,到底可不可以用复位跳开关的方式来重置系统呢?

关于复位跳开关的疑惑》上有4个想法

  1. Examples of troubleshooting are:
    • attempting to reset a system by cycling a system control or circuit breaker
    when not directed by the NNC
    • using maintenance-level information to diagnose or take action
    • using switches or controls intended only for maintenance.

    Troubleshooting beyond checklist directed actions is rarely helpful and has caused
    further loss of system function or failure. In some cases, accidents and incidents
    have resulted. The crew should consider additional actions beyond the checklist
    only when completion of the published checklist steps clearly results in an
    unacceptable situation. In the case of airplane controllability problems when a safe
    landing is considered unlikely, airplane handling evaluations with gear, flaps or
    speedbrakes extended may be appropriate. In the case of jammed flight controls,
    do not attempt troubleshooting beyond the actions directed in the NNC unless the
    airplane cannot be safely landed with the existing condition. Always comply with
    NNC actions to the extent possible.
    翻译的问题,呵呵。

    • 你这倒是有英文版啊,我就没找到英文版。不过我看翻译应该没问题啊。我遇到是实际情况是:一个机组起飞时按TOGA电门后,自动油门自动脱开,没有其他故障。机长中断起飞,但没滑回。后来机务建议重置跳开关。机组质疑机务这么做是否妥当。我想找到一些波音书面的解释。

  2. 你看他下面说的,nnc指引以外的排故方式很少起作用,且甚至导致事故,除非以按nnc指引操作后,飞机还处在不可接受的状态下,否则不建议这么处置。机组的疑问是有道理的。原版你可以在myboeingfleet下找到,不过必须有帐号,通常机务在负责。

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