F27 airtest following major servicing. Pre-flight was unusually thorough.
“V1, rotate” called the other pilot. On rotate – seat promptly shot backwards. “Your’s Bill” I yelled but he hardly needed second bidding as I let go of the controls.
(Well you try holding the control column forward as your seat shoots fully aft)
The seat locking pin – and I swear I had checked it very carefully – had come unlocked.
We had a ground engineer with us. I got out of the seat and watched while engineer spent some ten minutes or so fixing my seat locking mechanism.