Hi Guys!
This is my 550, and I am using the Naza. I do fly a Compass Atom 6HV, 7HV and a Mini Titan V2. on my daily basis so I can guarantee you I did not loose orientation. I also fly an Mikrokopter Okto XL a lot so i am used to flying helis and multicopters... I think this had something to do with bad calibration or something. When this happened i were in Atti mode and I tried to switch to Manual mode and last tried to switch to fail safe mode and nothing happened. Somebody thinks it has to do with a bad motor or a blade strike but i am not sure if i think that could cause it. In my opinion it should have fallen down, not take off and fly by itself. And i should be able to gain control even with one bad motor. But in this case it did not even respond to my corrections.
Everything works perfect today, even the Naza and I flew it for about 5 minutes ago. Have only tried two batteries after the crash so still have to fly it before I put my cameragear on.
I will be flying this with an Askman Gimbal and a Nex 5N when I can trust it enough. Will try to add the GPS again in a day or two. Thats the only thing i have not tried after the crash so not sure if that works now.