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Old 31st May 2017, 18:28
  #607 (permalink)  
tdracer
 
Join Date: Jul 2013
Location: Everett, WA
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Originally Posted by stilton
The 767 RAT provides hydraulic power to the flight controls in the event of a dual
engine flameout.

It does not provide any electrical power.
Correct - the 767 battery is certified to supply critical electronics for 30 minutes (which in the case of an all engine power loss is considered to longer than a 767 would be able to glide).
However the hydraulics can supply some electrical power via the HMG (HydroMechanical Generator). I don't believe early 767s had an HMG basic, it was added as part of the ETOPS package.
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