D.C.3 Elevator Locks

[avionic type]

On the B.E.A. Pionairs we had control locks held on by a bungee rubber clipped to a small tab with an hole in it and were removed by the departure engineer on the first flight of the day, on turn rounds the controls were centralised and the Auto/pilot was selected and being hydralic the servos locked and kept them in that position .I,m ready to be corrected if my memory is letting me down, it was a long long time ago.