Recall one of the old PanAmerican B707 simulators in SFO in the early 70's. The visual system was 35mm film and I was in the middle of a no-flap approach when the film broke and spooled all over the floor like a big black snake. As this was a type ride for me, the FAA was NOT ammused. So, we did it in the aircraft later that week, right before the circling approach with an engine shutdown (actual) due to a fire warning.