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Old 17th May 2015, 07:38
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zerozero
 
Join Date: Jun 2001
Location: Chicago, IL, USA
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767-200 dead APU Battery

Hoping my question doesn't reveal any remedial systems knowledge, but I'm curious after recently reporting to a/c with dead APU battery.

Why isn't the system designed to be able to start the APU on ground power?

I have a hunch, but I'd like to hear your ideas.

We accomplished engine start with external air and departed with APU deferred.

Thanks.
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