Wing did a flip and crashed

Please, can you look at my log. I have Arduplane 4.2.3, configured for wing (Elevon left, right and throttle). FC is Pixracer. Wing did a flip in 3:53 and then crashed. Difference between NavRoll/NavPitch and Roll/Pitch is growing from this time. What does it mean?

log:
https://drive.google.com/file/d/1HIphBZADgm1XhHGzpnwTaNRyAn3B_CAA/view?usp=sharing

Hi Ivosch

A failure of one of the Elevon servos could be the cause. I once had several crashes with an Opterra wing where one of the servos simply showed failures at irregular intervals. Each time after a crash the servos worked. The defect was only noticed when I had to wait longer for statellite reception playing at the aileronstick noticed that one of the servos suddenly stopped working. Power disconnected and reconnected it ran again!!!. I have then exchanged the two servos against others and all was well.

Rolf.

Thanks Rofl,
both servos work fine now, as in your case. I will look closer on it. I was also wondering about wrong PIDs values. I run autotune in previous flight and didn’t finish it.

I.