I guess I could actually study airplane design and get an actual pilots license and then is know the answer. But where us the fun in that. I was wondering: what's the minimum that you have to have to legally fly an LSA? My guesses are: - compass - oil temp - oil pressure - altimeter - tachometer - fuel level - battery charge In this hypothetical aitplane, I'm not flying at night. I have a fixed gear. The engine is something like an 0-200 or something else very simple and old school.