Trying to do the 300 mile flight without assistance what is assistance?

I am trying to compleate the 300 mile flight “without assistance”. I have done this on several aircraft with all assists and ATC turned of but it is not showing under achievements. So my question is what is classed as assistance? Is GPS or auto piolet classed as assistance? Help please from a newbie.

2 posts were merged into an existing topic: Achievements ‘without assistance’