I lost my SE becuase i was goofing around right before my last flight
I was having too much fun. I didn't inspect my model after the third flight.
She flew perfect without any problems.lol
Then i decide to do donuts becuase no one around. testing out my extended rudder.lol
The sun was setting , beautiful sky. Plus i had neon stips on my leading edge
Put her put ..toss her around for a few minutes, the next thing I knew , she had a mind of her own.lol
I saw something came off.
I had to go back the next morning to retrieve the parts becuase it got too dark .
I found my battery pack a hunred yards from where she embeded herself.
It broke the muffuler even. The shaft still looks good from eye site.lmao
The screws from my hatch had came loose...me doing donuts didn't help.

I lost my 4* .60 after it fluttered. I forgot to inspect the aileron rods. After that flight.
I back off of the throttle and forgot about it after the flight.
She did good kniftedge becuase I removed the dihedral and extended the rudder and made the vertical stab a little bigger.
So i had it OWT
The aileron broke in half becuase the rod bent more during flight. It cuased a major drag.lol

Yeap, preflight check and inspections before every flight.