Have a Pixhawk controlling a hexacopter built on a Tarot 680PRO frame. Also have the 3DR GPS/Compass module oriented and calibrated. Pixhawk is running ArduCopter 3.2.1. Radio is an FrSky Taranis with X8R Receiver.
After taking off in stabilize and then switching into AltHold then Loiter, the copter will be stable. All of a sudden it will go veer right and crash to the ground.
From reading other posts I thought this may have been from having the maximum loiter velocity set too high so I decreased it. I also re-ran the compass calibration. The next test flight showed that this was not the problem as the same thing happened again. On the second flight I also noticed that the copter twitched a few times right before it completely lost it’s stability and crashed.
I am at the point where I have no idea what is causing this, any help would be greatly appreciated.