Phantomtravels1
lvl.1
Flight distance : 183432 ft
United Kingdom
Offline
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Thanks for your input everyone.
It's a pretty unique set of circumstances on this. The Mavic does move away in line with the wind direction. I was looking at trying to prove what happened as if it was wind and if it wasn't. There's a few things that didn't make sense to me when proving it was wind on this. One is the speed it moved away from me. It was a constant regardless if full throttle was engaged or not. The wind read outs around the time of the flyaway were well under what the Mavic manual recommends so I'm curious how accurate those readings would be in the flight records and if there's a way to figure out how the on board system gets those numbers, looking at the pitch/roll to get that wind read out manually.
The other point which I don't understand is that it's moving away at speed and then I triggered Landing Mode. This brought the bird from flying away at 30kph with full forward throttle engaged to a stop, and it did so before it started to descend.
In hindsight I really wish I had dropped the altitude significantly as soon as possible so I could then see if that would have made a difference. My thinking was that I saw a battery overload message on my screen and because I had a battery cell error on my p4 a year earlier where it fell from 270ft instantly, I was expecting the same and wanted to get it back as soon as possible, I wanted to get the bird back in my line of sight so dropping it against the ocean and rocky cliffs rather than a white cloudy sky would have made it more difficult. You know what they say about hindsight anyway!
I also think had I not read so many fly away stories, that my p4 didn't fall out of the sky for no reason the previous year, the subsequent headache of trying to get that sorted with DJI and it getting stuck in Myanmar due to the strict postage regulations there and the battery over charge notification during this crash flight, I might have responded differently and it would be easier to eliminate reasons for it moving away. I was convinced at the time this wasn't wind doing it as I had it in my line of sight and it wasn't really struggling at all. I knew the weather report for the time and had tested it myself in higher winds + seen multiple videos of people flying it in 40+mph winds (which I wouldn't have attempted myself).
I'm two drones down now, the P4 had 6 hours flight time and this Mavic just 2 hours. As the P4 crash clearly wasn't my fault, I just want to be sure what's going on here. This is my job and I really do look after my gear. I've just had such a painful experience with DJI so far with the last year trying to sort my p4 with such poor communication for the CX team (I've never dealt with a company that doesn't allow managers to speak to customers?!).
And final point, the compass error notification on the flight record did not flash up on my screen. When you play review the flight on my phone, all other errors/tips/info shows. I've also looked back at other flights after I updated my Mavic and there are Compass Error warnings everywhere! All of which didn't show whilst flying. Being that I don't trust the products and I'm overly cautious after the P4 incident, that warning error would have stopped me flying on this crash flight until I figured out what had happened. I'd watched many videos with the Compass Error where people had lost all control of the drone so I definitely would have ended the flight instantly and that warning should have been shown to me after 7 seconds. It's not going to make a blind bit of difference moving forward with this but maybe DJI should address that issue for other pilots as I think most of us would like to know when there's a problem with something?
I've just this minute had another vague response from DJi. ''At first, sorry for that we couldn't judge the performance from other unofficial data, application or Message. And secondly, the drone was interfered by the large winds, our app reminded you many times that the high wind velocity, please ensure the aircraft stay with your line of sight. And during the flight, the app prompted was “overcurrent” not any error message, due to the aircraft was blown by the winds and the motor output was over than the normal situation, so the current would become bigger. In the end, the aircraft was blown by winds and against with it all the time, even though you didn't operate the remote, with no input, the drone would be easily to drift in the air because of the high winds''.
I did request detail into what wind speeds the Mavic will fly drift as fast as it did in. And wanted some insight into what I've written above with the auto landing bringing it to a stop. But it's easier to reply with a somewhat impersonal and scripted response to just say it was the wind without any further explanation in addressing my concerns. And I only had one high wind warning before it was too late. A warning which I was getting in the lightest of breezes on previous flights. And also, it wasn't out of my line of sight, I told them this as well.
Pretty gutting to lose this much money with two different products. Drones aren't for me it seems
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