fansb1fe1104
Captain
Flight distance : 3372566 ft
United States
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Labroides Posted at 12-13 21:21
The drone took off and followed the waypoints and went out of sight until i received a warning that signal loss had occurred. This is the last that I saw of it, never returned, even low battery failsafe did not work.
I've investigated a number of similar cases and each time, the issue was down to the operator doing something dumb like not allowing a safe margin for trees etc, not allowing for wind speed etc.
I've only had 1 incident with Litchi that nobody was ever able to explain. Last year I had created a mission and except for the first and last few waypoints the entire mission was set to 270 ft AG. The flight started out perfectly, but then about 10 waypoints in my Phantom 4 went from 270 ft AG down to about 130 ft AG, it stayed at that level for about 2 waypoints then it rose back up to 270 ft AG. It as a little nerve racking at first because when it went down it came kind of close to a power or telephone pole (in reality it was probably at least 50 ft above the pole because the camera makes things seem closer than they are.).
When I got home I triple checked the waypoints to make sure they were set to 270 ft,AGL which they were, I then posted to the Litchi Facebook group about my problem, let them have access to the mission itself and the logs and nobody really even knew what to guess what was wrong. I uploaded the video too and one person pointed out that it had stayed at a constant speed in parts where it was supposed to slow down (yes I had contact with the controller the whole time.)
So after that I was afraid to use Litchi again, but I finally got the nerve up to fly the exact same mission without making any changes and this time it flew exactly as it had been planned. I have done maybe 15 waypoint missions and that was the only problem I ever had with it. |
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