fans49b854d6
lvl.4
Flight distance : 1430226 ft
United States
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My mavic 2 Zoom is in your repair hands now, recieved 2 days ago. I have sent in my sync'd data from controller, I was unable to get log directly from mavic, not sure why. I am writing this becasue I want the tech to read it before making any determinations about the cause, as there are some unexplained things that I need to understand.
Here is a recap of what happenned:
I was flying my M2Z over a huge (about a square mile) pasture across from my house as I have done many times before, and had just switched from sport to position mode to make a smooth ride home, then the battery got to 25% and indicated that it will RTH in 10 seconds. During the countdown I repositioned myself preparing for the RTH adventure, then the video went a little shaky, followed by a video freeze, then the the announcement "Landing". I obviously got concerned, so I quickly pressed the pause button on my smart controller to stop any autonomous activities, but no joy, everything seemed to be disconnected and unresponsive, and no video feed. After about a minute, I realized that I would have to go on foot and cross the cow field (about 3500 ft) and try to locate the drone. After retreiving, I noticed that the front arms were broken, but the front left was more of a clean separation than a break caused by an impact. Since there was nothing in the area, a collision could have only been with a bird or a rancher's bullet (I would have heard that), and there was no sign of feathers or blood that would have been present if it was a bird.
See front-left arm is a clean separation:
Could the front arm simply have fallen off? What explains the clean separation and sudden fall from the sky?
I'm not really sure what happened, but the flight log from my smart controller showed RTH initiated, preascending to RTH height (186 ft), adjusting heading, then LANDING, all with 25% battery and only 3500 ft from home, no wind, beautiful sunset evening, clear LOS the whole time. The video ended during the RTH climb, and did not reveal any of the events that killed my zoom, but shows the area as being clear and the weather as . Log showed 16-17 satellites at the time of the mishap, but the log also showed that it switched from ATTI-GPS to ATTI during that last milliseconds of the flight before I lost it.
Another thing to consider is hat I had just recieved this drone from a refresh replacement (2nd one, as the forst replacement was DOA). I had been flying my original zoom for over 2 years with no issues, but one day in late February I took it out of the case to cycle the batteries (I don't get much of a chance to fly in the winter in Montana) but got a 200 error and could not get it fly ready. I opened a case with DJI refresh+ (last year of eligibility, and only about a month before it expires). They did the replacement option ($149) and sent me a shiny replacement. Lo and behold, it was DOA with a gimble overload error. After another few weeks of arguing and shipping, they honored another replacement, this time without the replacement fee, but now beyond refresh deadline. I have had this one for a little more than a month at the time of the crash, flying it a few times, and now this happens. Now that I am outside of any refresh options, I am hoping that since it was just put into my possession that DJI will also see this as a device malfunction, replacing it again at no fee.
Link to last minute of flight on google drive:
https://drive.google.com/file/d/18LxgUqfVsKsymGUWkF9Uv1dpm98JKjx9/view?usp=sharing
Link to complete flight log from Smart Controller:
https://drive.google.com/file/d/18LxgUqfVsKsymGUWkF9Uv1dpm98JKjx9/view?usp=sharing
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