Ha ha ha ha. There wasn't any. The cabin was clean; the only gesture towards flight safety was that the seat belts were left attached to the wall when the seats were removed. The only seat that I can remember was the three seater that went across the front of the cabin. Troops; if they wanted to strap had to sit on the floor. Most didn't bother. It was only late 1966 that we carried a crewman on every trip; before that he would stay at the base and act as Movements. Most of the time we could not afford to carry a crewman; there were too many troops to move.
He, or a couple of Gurkas would sit with there legs dangling over the sill. At that time a crewman would have a two piece flying helmet with a silver finish, and most would have scrounged an Australian light green flying suit Gurkas wore jungle hat, drab green kit and the famous green jungle boots.
I have a picture of a typical lift out of a DZ. It will, however, take me some time to find it.
Watch this space.