I had always worked on the basis that a complete loss of main bus AC power was an inflight emergency due to the loss of instrumentation after the batteries give out, but after reading about the loss of a Vulcan B.1 when the flight controls seized I was left scratching my (obviously confused) noggin.
How would the loss of electrical power seize up hydraulic controls, or is this simply a case of the Vulcan using electrically actuated control surfaces?
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