Another true Whirlwind story. A certain French exchange QHI arrived in UK not able to speak a word of English. Communication was difficult at times.... However, he was ex-Alouettes and until he flew the Whirlwind 10 he had only ever flown turbines with a manual throttle.
His students didn't often get to fly using the fuel computer - he preferred them to fly using the manual back-up.
To carry out a full to-the-ground EOL in the WW10 one had to take out the flight idle stop so that when the speed select was retarded the engine went right down to ground idle (if this wasn't done the engine responded as the collective was raised). A course colleague of mine was instructed by the French QHI to fly his GH in manual. He was told to carry out an EOL at Ternhill, as was the norm towards the end of the later sorties.
He took out the flight idle stop, lowered the lever and manually closed the throttle. No problem, EOL done. He was then told to take off and do another...but the aircraft was still in manual control. This wasn't the usual configuration post engine start but my fellow student pondered for a mere second and then opened the throttle. Apparently the flame from the jetpipe was quite impressive, but the engine was cooked!
This happened just before lunch. By 1430 on the same day there was a new order in the FOB which said EOLs must not be flown in "manual control"!