Drone Crashed After Switching to LOITER Mode (Stable in AUTO Mode)

ArduCopter
1

Hello everyone,
I faced a crash issue today with my multicopter and would like your help in analyzing it.

Before the crash, I performed both Accelerometer Calibration and Compass Calibration.
After that, I flew the drone in AUTO mode — it performed very well with no instability or warning messages. and flight was smooth and stable.

After completing the AUTO mission and landing safely, I re-armed the drone and switched to LOITER mode for another short flight. As soon as I took off in LOITER mode, the drone rolled sharply to the left and crashed.

The vibration levels (output oscillation) were below 0.15 before calibration of the sensor

is the issue of calibration or other

crash log

Before calibration of accel and compass

2

Follow the recommended configuration process as described here

1 Like
3

The fact that the log file is not named with a valid date means there was never a suitable GPS fix.

You were in Stabilise mode, not Loiter. Loiter would have been denied even if you selected it.
HDOP was too high and Home was not set.

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Work through configuration in detail again.
And set FENCE_ENABLE,1 and you wont be able to arm until there is a good GPS 3D fix.