Originally Posted by
jugofpropwash
Seems like it would be fairly easy to bump the next lever in addition to the one you were trying to shut down, especially if you had large hands - or arthritis, for that matter. Not saying that's what happened, but could be a possibility?
You reach with your finger pointing the correct Eng. feather switch leaving its number in view, then ask for the other pilots confirmation.
Once confirmation is received you just pressed it.
(Prior to that the affected throttle should be confirmed and retarded to verify you will shut down the correct engine. )