What happened ?

[surplussunshine]

Yesterday I took my p3a out, check all vitals. Wind was at 7mph.

Upon lift off the phantom started doing an upward toilet bowl turns. I was unable to control any side to side movement. I brought her down, which was a bit rough.

Any idea what would cause such a lack of control ?

 

[msinger]

That usually means you need to recalibrate the IMU.

 

[Recce2]

Do a good compass calibration also.

 

[ianwood]

TBE is all compass. Calibrating the IMU will not fix it. TBE means the compass was providing bad data for which there are two common causes:

1. Taking off from something that has it's own localized magnetic field like a paved sidewalk.
2. The compass calibration is no longer accurate or was done near a localized magnetic field.

 

[surplussunshine]

Thanks all.