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Old 10th July 2022 | 00:41
  #37 (permalink)  
EEngr
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Joined: Jan 2011
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From: Seattle
Originally Posted by NSEU
I'm not sure what you mean by starting a 747-400 on batteries. Bleed air is required,
The APU can provide bleed air once started. The APU itself can be started from the APU battery alone.
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