Pixhawk last revision with 3.3.3 firmware.
It is not the first time it happens, but previously I suspect bad compass , Gps gliches, solar storms .
Today I check everything twice and all was going well.
The symptoms that something is going bad soon is the heading that change of some degrees or start to go in one direction.
In dataflash log just before minute 9 you can see a variation in both MAG.MagX andxMAG2.MagX.
That time it start rotated on yaw but it stop or I control it with Yaw stick, do not remember.
It happened again before uncontrolled descent/crash at minute 19.
It start to yaw right for some 150°, I switched to stabilized mode trying to keep the copter up giving more throttle and yaw command bur the hexa do not responds to radio sticks and gently went down in stable attitude , almost as if it was landing automatically but with no control from radio and a little bit fast.
No damages but I was at only 9 meters altitude.
No error messages, no warnings , no EKF compass errors.
Esc or motors were not hot at all.
I really need some help since really do not know what the hell is going on .
In attach the .bin file .