I've worked on airplanes for a long time now, and there is one thing that is a constant. Airplanes break down. So how about random stuff on the plane breaking down while you are flying. Not every flight, but every once in awhile. Make it an option that you can use if you feel like you want a little bit more realism, and if you use it you get extra perk points. Here is a list of some of the stuff that could go wrong:
- Hung bomb/external tank
- jammed gun
- fuel won't transfer from one of the internal tanks
- cockpit gauges stop working
- engine problems
- radio broken
- oxygen problems