Sonic Series | nnP-39

[andrej]

I slightly adjusted the motor's side thrust angle and swapped the three-blade propeller for a two-blade one; one wing panel seemed a bit heavier, so I attached a 1–2 gram washer to the wingtip. It flew straight after that. But then something went wrong: it spiraled out of control into the woods and slammed into a tree. I suspect the servo arm on one of the ailerons popped off—I hadn't secured it with the screw

 

[RickHunter]

I slightly adjusted the motor's side thrust angle and swapped the three-blade propeller for a two-blade one; one wing panel seemed a bit heavier, so I attached a 1–2 gram washer to the wingtip. It flew thestraight after that. But then something went wrong: it spiraled out of control into the woods and slammed into a tree. I suspect the servo arm on one of the ailerons popped off—I hadn't secured it with the screw

Sorry to hear that. I lost two planes when I first started due to that exact same thing. My normal flying buddy still makes fun of me. He also checks all my new builds to this day to make sure my servo screws are in place.