Planemike
Surely would only wear a harness if operating without doors.....photography, supply dropping etc.... It would appear that a door flew open unexpectedly.
In my experience all passengers strapped in at all times and wandering crew always on a "despatchers harness".
I know of one crewman who fell out over Plymouth at about 10,000 feet whilst depatching parachutists and was saved by his harness.
Colour his pants brown................................