Image and ArduPilot version.
Raspbian image 20180525
Mission Planner 1.3.68
Frame: DJI S1000
Our drone was near to landing when it suddenly climbed to 150m and then fell to the ground.
First of alla, we had several problems for getting accel calibrated, but after repeating the process several times we though it was solved. GPS was fixed and drone let us arm, so we started flying. Drone was flying as usual (loiter mode) and I was close to land when it just climbed to 150 meters and suddenly fell from sky. I managed to retake control at last time and land it, but it could have been gone really bad.
I downloaded dataflash log and saw that ekf failsafe was triggered, but still don´t know what caused it or what made the drone fly to 150m up. Log is full of baro problem messages but this didn´t affect ekf parameter or drone attitude at the begining of the flight. GPS was good all the time.
I think that accelerometer was the problem but don´t know how to check it to be sure or prevent it.
I upload the log file in case anyone can see something.
20191007_prueba_incidente.BIN (1.5 MB)
Thanks in advance to anyone who might help!