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Old 3rd Jun 2008, 11:36
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Toujours
 
Join Date: May 2008
Location: United Kingdom
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Split Bus AC Generator Question

Hi all

The below question assumes the airframe in particular has a Split Bus System.

If a twin engine jet's Number 1 AC generator fails inflight, I am aware the Bus Tie Breaker will close and therefore supply all the DC loads (thanks to the Number 2 AC Generator), however in doing so is the Number 1 Main AC Bus Bar supplied with power from the Number 2 Generator?

I think the answer is NO but I would like to confirm this.

If the answer is indeed no, would it be a good idea to switch on the APU to power the Number 1 AC Bus essential loads or would you use the battery to do this? I reckon the battery would only be used if both AC Generators fail.

Thanks guys. Look forward to your professional opinion!
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