Labroides
Core User of DJI
Flight distance : 9991457 ft
Australia
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There are no obvious problems in the CSV file.
The data file doesn't give much to go with, but helps to eliminate some possible causes for loss of teh drone.
It ends with the drone in stable flight at 8 m/s, heading east and was just north of the workshop.
The battery was in good condition and freshly charged with all cells >4 volts.
Altitude was sufficient that loss of signal behind an obstacle can be ignored.
Pitch, roll and yaw data give no indication of any collision.
At this stage we are assuming it went into hover in ATTI mode and was carried off by the wind.
There's no reason that the Phantom should have lost GPS, but if it did the control signal would have been maintained.The Litchi data file doesn't show what the drone was programmed to do if signal was lost during the mission.
If it was on the Litchi default setting, the drone should have continued the mission which would take around the circuit to waypoint 13 and whatever end of mission instruction was set.
If if you had it set to RTH on losing signal, you'd have had it come home.
The only logical conclusion is that signal was lost because of a total, sudden loss of power which prevented the Phantom completing the mission or returning home.
Given the height and speed of the drone, a rough estimate of where it may have crashed is approx 50 metres east of the last reported location.
This is short of the haul road around the head of the arrow.
If you didn't already, I'd concentrate a search for about 25 metres around that point.
Good luck
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