Scuderia Rimoli
lvl.2
Flight distance : 922182 ft
Brazil
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Hello Guys, greetings from Brazil!
First of all, If this is not the right place to post, my appologies. This is/was my first DJI, I have flown 17h and 223km with it and never felt so powerless as this time.
I have taken the time to read 2 complete threads about losing drones in windy conditions before posting here and tried to learn as much as possible on what to do in future situations. After reading the good stories from fellow @TechVoyager and @djiuser_L993ni8 with happy ends (https://forum.dji.com/thread-170653-1-1.html and https://forum.dji.com/thread-122315-1-1.html), I've decided to post mine and ask for help. There are 2 things I'd like to achieve here: find the drone if possible and understand the cause of the accident, to determine if there was any issue on my aircraft.
I have done some investigation myself (with AirData and phantomhelp), my girlfriend and I have tried to reach the point where the Mavic Air was last recorded but couldn't find it after 4 trials, even with the help from a firefighter with 15 years of experience in rappelling / climbing. The place is not easy to reach at all so I don't think anyone found it before we were there. I was in vacation, it was Monday and the mountain/rock was not crowded as in the weekends, almost no people there. I know it must be out there, but would love to have the experts insight on where it should have landed considering battery level (9%), height (approximately 15m from the rock), direction and wind speed.
- My flight was very short, roughly 10min was the time from takeoff with 95% up to 9% battery and by the time I realized I had to come back (high wind alarm was set) I was "only" 500m away, with +60% of battery.
- I was flying from 1360m of altitude, had reached +75m (1435m) with no issue or high wind alarm (so far) and tried to lower it down up to -45.5m (1315m) to try and bring it back to home point, without success. The rock itself covered the signal when the drone was about to land. Do you guys have tried to land on a steep rock (45º?) to see if it sticks to it? I fear it may have slipped downwards.
- The wind @ 1456m (+100m from landing point) should be high but acceptable at 29km/h according to: https://earth.nullschool.net/#2019/08/12/0900Z/wind/isobaric/850hPa/overlay=temp/equirectangular=-46.531,-23.172,3000/loc=-46.531,-23.172
- The attitude of the drone seems to be too low for a high wind situation. The warning "Attitude is too large. Forward/Backward Obstacle Sensing is not functioning" has only been given at 02m23s, 02m39s and 06m21s, although I understand this would not be triggered while in Sports mode.
- I have tried to use the GPS mode, Sport mode, RTH mode (with and without 100% input on right stick) and back to Sport mode again until battery was almost drained.
- What worries me the most is that after checking at Airdata, I have observed 1,538 times the message "Warning: Not Enough Force/ESC Error". Is this normal?
I have been 20m next to the aircraft last known position in less than 20min after the "crash" and wind was ok. It was nowhere near as high as 50km/h - there are test videos in youtube showing much higher winds and the MA was fighting but looking "ok", not drifting like mine. I have more information to share if needed but would like to hear from you guys first. Please advise if my logs are working as they should. Thank you in advance!
Please check Log here:
https://www.phantomhelp.com/LogViewer/7XPY3QXJ29IN2GHAN562
https://app.airdata.com/share/fcCLqg
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