Twice recently I've received permission to fly near an airport - directly in the flight path - as long as I stayed under 200 feet. However, when I tried to fly the first time my Mav hit an invisible wall. It would not fly across that invisible border that marked the flight path. It simply...
I found a new video by Dragon7 that demonstrates the NFZ implementation in the latest firmware. Please note that older firmware will behave differently. Doing anything from instantly landing to bouncing off the NFZ fence and flying away.
Enjoy
Rob