Håkan K Posted at 2017-3-22 09:24
It appears you had issues already before entering the POI mode. If looking at your data and the map it never became a circle which a POI will make. To me it looks like an issue with either the motor or what is driving it. Or maybe as the warning messge says a propeller came loose. Was your propellers looking OK after the crash?
You may be right... the issues started just before (or as I was) engaging that POI mode.
About 30 seconds after take-off, I opened the Point of View mode while the Mavic was hovering 180ft (60m) above. Everything appeared stable and I had good GPS and remote controller connections. Nothing seemed wrong. The props were ok then and working fine for the first minute or so.
As I setup the point of interest to fly around, I quickly focused at infinity (far away point) and then adjusted the gimbal down to the center of interest, just before (or as I was) engaging the POI mode. I actually thought I started the mode then, as I saw the Mavic fly off on its own (but sadly only to witness it fall from the sky). No pictures had yet been taken on this flight.
To see this flight in 3D, I reviewed the .kml file available at HeathlyDrones.com with Google Earth Pro and see it seems the Mavic might have even started its arc around (counter-clockwise)... by itself, but then a few seconds later suffered prop/rotor distress. After crashing to the ground, one rear rotor motor busted off and had no prop. The front motor on that same side had its arm ripped from the socket by the impact and also had no prop. The other side had its props, though only one seem to survive intact.
The ground was grassy but frozen and has since become snow covered again. I'm going to go out when the weather improves (here in Canada) to see what remains I can find...