Labroides
Core User of DJI
Flight distance : 9991457 ft
Australia
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Posting on just one thread is enough.
Looking at your data, we have a problem in that the flight data just stops 10 seconds after tou begin to RTH so there's a big blank right where we want to see what happened.
RTH began at 14:02.8 after a lost signal.
At 14:12.3 when the data stops, the Phantom had made almost 100 ft towards home and was just getting to 3.5 mph at 400 feet altitude and 47% battery.
Looking back at 9:47 when you had also entered RTH in the same direction and height, your Phantom managed to do 13mph for 10 seconds but then slowed further.
This suggests that the Phantom was battling a headwind as its speed is less than RTH can make in still air.
The speed slowing further suggests gusting conditions.
If your final RTH was also battling against a gusting headwind situation, this is likely to be a factor in the loss of the Phantom.
Being a long way downwind and up high in strong winds is always a bad strategy.
It's likely that your Phantom struggled until reaching a critical low battery state and autolanding.
calculating where this happened in these conditions is too dificult.
It could be anywhere between where it last reported in and your homepoint.
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