Accelerometers params back to default by themselves?

@vascodx wrote:

Hi. A client sent me his logs after a failed auto takeoff with his plane.
Reviewing the tlog, bad ahrs was displayed before takeoff (he ignored it).
Comparing parameters from a successful flight he did days before, I see this:

Before crash:
INS_ACCOFFS_X -0,001401286
INS_ACCOFFS_Y -0,2112475
INS_ACCOFFS_Z -0,7012926
INS_ACCSCAL_X 1,000893
INS_ACCSCAL_Y 1,002801
INS_ACCSCAL_Z 0,9865661

On crash flight:
INS_ACCOFFS_X 0
INS_ACCOFFS_Y 0
INS_ACCOFFS_Z 0
INS_ACCSCAL_X 1
INS_ACCSCAL_Y 1
INS_ACCSCAL_Z 1

All the others params are set ok (except too for batt_monitor that was 4 and now is 0 ¿?).
How could this have happened? Maybe hi tried to calibrate accelerometers and defaulted them? Or could it be a kind of failure or bug (maybe from mission planner?)?
It is running Arduplane 3.7.1

Thanks for your help!

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