Just make sure you have the basics inspected like the clunk in the tank. If that fell off it sure would die in a hover. Also make sure you have the needles not too lean. That'll make an engine die. Things like a low battery are good to check, bad switches, bad ignition, bad spark plug. Like T.O.M. says it's hard to find the exact answer some times but you want to cover the basics to keep the next one from turning into spare parts.

PS: Also look for loose carb, loose fuel lines, places air can get in and lean it out.