PPRuNe Forums - View Single Post - Malaysian Airlines MH370 contact lost
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Old 11th Mar 2014, 20:19
  #1891 (permalink)  
Yancey Slide
 
Join Date: Jul 2008
Location: MA, USA
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Just seems like a turn back and loss of radio contact can only point to two things.

1) the aircraft was taken over by party's unknown.
2) massive electrical buss failure.

3 hole Falcons have a scenario that goes like this:
Buss 3 shorts out, pilot cross feeds bus 3 from 2. This takes buss 2 out, so he cross feeds 2 and 3 from 1. Now all 3 busses are dead.

It seems like there might be a failure mode that could take out both primary generators and the apu. At that point you would be down to "critical systems" like the FCS, pilots windshield heat, etc. that can be powered by the backup gen and emergency AC power.

Any 777 drivers know if a comm is part of the buss of last resort?
Don't the standby instruments have their own pitot/static systems and batteries to run them for the case of complete main system failure?
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