paarthurnax

https://i.imgur.com/NGtCpv5.png pic1 https://i.imgur.com/4gXixMl.png pic2 https://i.imgur.com/2a8efLG.png pic3 Why the heck does my proline21 NAV autopilot fly me off course deliberately! I'm on a flight from KTPA to KPAH and this happens, the first image shows me 20miles off course with no correction but oddly the second image will show you that it steers to the waypoint when it gets closer and image 3 will show you how it goes off course once it passes the waypoint. This never happens on my first flight, only the second flight, my only guess would be precession HOWEVER this is the proline21 so it should be automatically updating its self for magnetic variation. I don't understand, please help and thank you.