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Thread: B747 & A340 Electrical Systems
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Old 14th January 2012 | 16:57
  #9 (permalink)  
EEngr
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Joined: Jan 2011
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From: Seattle
There was a modification on the 747-400 to extinguish the AVAIL light if the ON light came on.
Thanks. That was probably done after my time. At any rate, having external power and generator power on the same buses is not allowed, so the graphic is suspect.
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