Had a bunch of them, most of the time in A-Stars that had more hours than I have been around.............and I have been around.
Best one I ever had was some fatsos in a Jet Ranger on a tour.
As typical Company wants to stuff as many in as possible for the $$$MONEY$$$. Anyway it was so crowded the guy on the left rear actually pushed the window out.......I guess he was trying to tell me it was crowded.
206 Pilot door on another. Again many hours on an airframe that had rolled down more than one mountain. Frames get tweaked and nothing fits right. Get it in a tight turn and Pop.........door is open.
A friend had a door on a CH-34 fall off in flight over a major city many years ago. Check this..........it landed in one of the other crew chiefs back yard from 1000' what are odds against that.
In this industry its a way of life. If you have tourists just tell them to close the door and carry on like nothings wrong......
Funny thing is with a couple thousand hours in a Huey and many with the doors pinned open or manually operated by the crew chief, never a problem.
Nealcon......Losing a Mars Bar from an R-44 must have really lightened up the load......