I have a great spot to fly near a small airport. My phantom 3 standard flew no problem but when I try my Mavic it says no fly zone. I've already talked to the airport director who said he don't care when I fly as long as I'm under 400'. My question is how do I get rid of the NFZ ? I didn't attempt to actually take off yet. I've seen very little common answers on YouTube. I've seen a few videos that just ask you to check a couple boxes stating you have permission to fly then I saw some that showed you hooking your controller to a PC and doing a bunch of stuff (which I'm not doing)