I fitted an apm 2.5 to my Bixler and took it for a test flight today. Took off in manual mode and got some height and then tried loiter. The Bixler promptly turned upside down and flew that way with some roll oscillations. I went back to manual and recovered it, and flew around a little longer and then tried again thinking it may have been a one off but it done exactly the same.
I use apm 2.5 in my quads and hex's so am quite used to them and setting them up but I am new to arduplane. Not having to arm it caught me by surprise when setting it up.
Is there something daft that I am missing? The HUD is correct when connected to the pc.
Can anyone help or point me to some help?
Arduplane version is the latest.