Speed tape https://en.wikipedia.org/wiki/Speed_tape it's amazing how janky aircraft and race cars are up close. I saw a Huey Cobra helicopter that the army flew in to a RC plane/heli event I went to and the amount of random rivets missing from the fuselage was insane, I lost count after a few dozen.
I had a screwed on body panel fall off my plane after it came back from an annual service.
Seems the junior person may have over tightened the little sheet metal screws and didn't tell anyone...
Luckily it was not critical to flight.
stupid shit happens. we had a mouse or bird nest just below an exhaust-to-head connection. of course it started on fire after 5 minutes in the air.
had a door that routes air over the exhaust to pre-heat it before hitting the carb get sucked into the system - it didn't make it anywhere, but hot air feeding the carb reduces available power. always nice if you want to actually climb.
yeah, the tape is a real thing.