[QUOTE=Wyvernfan;2219665]
I watched them struggle to start the engine on this Yak C.11 on the morning of an airshow at Duxford in 1984, then later during its display slot the late John Larcombe successfully forced landed it wheels up in a field on the east side of Hunts Road after the engine let go with lots of smoke part way through a barrel roll whilst flying west to east.
Rob
Did the engine let go or was it an issue with the fuel injected engine being held upside down for too long during a slow roll?
A number of years ago I watched another Yak 11 perform a similar roll which resulted in a lot of black smoke from the engine and a huge loss of power, luckily the pilot landed safely. As it was explained to me at the time it seems that the fuel management system didn’t like being upside down for too long and did odd things to its settings.
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