my spark is going into Atti mode on every flight lately.   I have uploaded the logs into phantomhelp.com if someone can give me a hand in figuring out whats going on.
When I fly, the spark drifts in yaw slowly, I swapped my props to see if it would help and no change.   Also, if Im flying forward in sport, the spark drifts to to the side as its going forward..   Just a simple calbration?  there are no prompts in the app asking me to calibrate.  


http://www.phantomhelp.com/LogViewer/4Y7L1SF7ZA0BZHZXL7OP/

and

http://www.phantomhelp.com/LogViewer/9L3L6EB74WXB54WYQTKP/

I also recorded the screen during the last flight because it was going into atti so often.  

It’s hard to pinpoint, but there are some electrical cables close to height you are flying in , also if you took off that close to car this will not do you any favours. You could try flying in a different area or try a compass calibration but you need to follow strict criteria for calibration.

You need to do a calibration free of errors and fly atleast 40 meters in altitude.

Racer, did you try to change an environment for further check? Please try to calibrate the compass and IMU for further check. I would recommend you flash the firmware and see if it works well. If not, please export the flight data and the black box for analysis.