Narrative:

Simply an error on crosschecking a switch position during checklist utilization. It was probably not the best time to remember to shut down the APU; but it is a very common practice for captains to shut it down when taking the runway for takeoff. As a crew; we need to double check that the generators are on the engines and not the APU before shutting down the APU.

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Original NASA ASRS Text

Title: A B737 Captain shutdown the APU while beginning the takeoff roll but because the engine generators had not been powered; the aircraft lost all but essential electrical power.

Narrative: Simply an error on crosschecking a switch position during checklist utilization. It was probably not the best time to remember to shut down the APU; but it is a very common practice for Captains to shut it down when taking the runway for takeoff. As a Crew; we need to double check that the generators are on the engines and not the APU before shutting down the APU.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.