Accelerometer spikes/glitches

Hi!

I noticed that the vibration analysis for my hexacopter (Flamewheel 550) shows very strong spikes for the accelerometer values. The values of these spikes are extremely high, I think these are misreadings and not real values. Has someone seen this before? Is this normal or might this be a defect of my APM board (it’s not genuine 3DR)? The copter flies rather stable, apparently the software can cope with this, but i’m still concerned whether I should replace the board.

[attachment=1]Vibration_Analysis_01.png[/attachment]

[attachment=0]Vibration_Analysis_02.png[/attachment]

Best Regards,
Claus

Almost certainly log file corruption.