Back in 1967 the RAAF obtained Avro 748's for its VIP squadron and School of Air Navigation.
Due to a series of cockpit mis-understandings while in the cruise (the captain down the back on the Elsen - which is the bog) a double generator failure occured and one engine was mistakenly feathered. It was a Keystone Cops type comedy with serious overtones.
The aircraft diverted to a country aerodrome where because of a now total electrical power failure (battery by now was flat) a flapless asymmetric landing was made.
At the time of the electrical failures the fuel trimmers were almost at the zero position, and of course with no electrics they were stuck in this position for good. This was potentially serious, because if an asymmetric go-around had been attempted, the remaining engine would have not been able to deliver full power due zero fuel trim. If nothing else it would seem wise not to move the fuel trimmers to zero for any descent unless the manufacturer requires it.