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AP 4.0.7 - software induced near crash during autotune flight

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@maciek01 wrote:

AP407, matek h743 wing, sonicmodell binary

as log shows, AP decided to roll the plane to the left extreme - desired roll suddenly dipped to -40 and actual roll followed, ALL despite of lack of such input from RC and a very stable horizontal flight.

this was then accompanied by this message: EKF2 IMU0 yaw aligned to GPS velocity

and immediately followed by erradic pith variations (looks like vibration on the video). things stabilized afterwards.

here is the log: https://drive.google.com/file/d/1QzVmgYlvNoC1JoupDZuVZrzvjR7zgndi/view?usp=sharing

and video: https://youtu.be/1ycx_qr2d0g?t=102

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