ACAWSAdvisory, Caution, And Warning System
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The advisory, caution, and warning system (ACAWS) on head-down display (HDD) No.
However, rather than prepare for an engine shutdown, my copilot casually pressed the annunciator switch light to silence the warning, as the crew chief nonchalantly noted that the ACAWS was erroneous.
We do this because pitch-control-unit (PCU) sensor faults are a common issue that routinely result in a "LO PITCH STOP FAIL" ACAWS. If we always ensure a good overspeed test before each takeoff, then we never have to shut down an engine for this ACAWS according to the interim flight clearance.