"when applying Ground power to the Ten was due to an early episode where the PFCU's on one aircraft remained online, so when external power was applied, the resulting loading resulted in the powerset rotating around itself."
If you didn't do "pre 200 Volt" checks thoroughly on the Vulcan you ended up blowing all the bus bar fuses in the arse end when you put the power set on line - hell of a replacement job for the leckies. For all the crap jobs I still loved working on them
