Another mavic mini flyaway

[eaglesurfing]

Wow... Another sad story.
Thanks for providing more information to tell us what really happen.

 

[GerdS]

The poor GPS message came at 2 seconds before the drone had acquired GPS,
The No Signal Message was after the drone was out of range and signal was lost.
The whole flight was carried out with very good GPS.

There was nothing to suggest any problem with the compass and the drone wasn't in atti mode at all for the flight.
It blew away because the wind was much too strong.

Then look again at 3m 2s.

 

[Deleted member 103366]

"stop the rotors wasn't possible" Does this mean that the mini (original) does Not have the emergency shutdown like the Mini 2?

With regards to the CSC, see page 39 of the MM v1.2 manual AND post 15 in Noob Mistake . Kill bill 3

 

[Meta4]

Then look again at 3m 2s.

Yes ... a momentary false alarm.
14-15 sats, GPS health at 5/5 and the drone maintained GPS.
If it had lost GPS it would have dropped RTH instantly ... but it didn't.
There was no hint of any compass or GPS issue for the entire flight.

 

[slup]

Then look again at 3m 2s.

You mean this from Airdata ..?



It's not correct ...

Here you have all about the GPS through out the flight:

 

[Deleted member 103366]

A question, does the fact that Airdata can output some of the .txt data mean that Airdata has cracked the encryption? If so could they release all the data in the csv rather than the limited number of types available in the current csv?

 

[slup]

A question, does the fact that Airdata can output some of the .txt data mean that Airdata has cracked the encryption? If so could they release all the data in the csv rather than the limited number of types available in the current csv?

Most probably ... for both questions ... how they got their hands on the new encryption & if they intend to release all content in the log is another thing, only they can answer that.

 

[STS-Mavic-Mini]

Hello, my mavic mini flew away.
Although the telemetry data show several strong wind warnings, the wind wasn't that bad.
Any suggestions on what might have gone wrong will be highly appreciated.

Many thanks

Your data shows max. speed of 43 km/h. The Mini can't fly that fast unless it's downwind. The data also show lots of warnings were given. Sorry for your loss.

 

[Deleted member 103366]

Umm sorry but the MM's top speed is given as 13m/s in the manual, = 46.8km/h, 42.6ft/s, 29mph.

 

[teeroy]

I watched the left joystick and the AC seems to have climbed with no input, will the wind blow it up and away?

 

[slup]

I watched the left joystick and the AC seems to have climbed with no input, will the wind blow it up and away?

Your observation is correct ... this is due to that he activated RTH so the AC started to climb up to the set height of 35m ... so nothing strange there at all.

 

[teeroy]

Your observation is correct ... this is due to that he activated RTH so the AC started to climb up to the set height of 35m ... so nothing strange there at all.

View attachment 122920

Thanks slup. You da man.

 

[Made2Phly]

The term flyaway suggests that the drone itself flew away but analysis of flight data from hundreds of flight incidents shows that drones don't just fly away at all.
When people say flyaway they usually mean : I lost my drone but don't know why.

Same with "fell out of the sky."

 

[Yogi053]

Same with "fell out of the sky."

Nope, don't agree.I haven't read any reports yet of drones 'falling out of the sky' attributed to pilot error only!

 

[slup]

Nope, don't agree.I haven't read any reports yet of drones 'falling out of the sky' attributed to pilot error only!

Then you must have missed the "fell out of the sky" due to prop icing cases recently ... very much the pilot to blame.

 

[Yogi053]

Then you must have missed the "fell out of the sky" due to prop icing cases recently ... very much the pilot to blame.

I stand corrected! For some reason, I overlooked those. As you say, completely pilot error!
I must be a real 'wuss' trying to fly my Mini 2 according to existing advice from Dji regarding it's limitations and also following the advice of those who have far more experience than myself when it comes to flying in damp, foggy, cold conditions.

 

[aidworker]

Well, thank you all for your feedback.
Although, as I wrote, I flew my mini quite some times in similar wind conditions in higher altitudes, the outcome was entirely different. In the end, I don't believe that any reasonably seasoned pilot would risk their drone.
What makes the most sense to me is Slup's comment that: "It looks like this Mini ... as so many more, can't reach tilts according to spec. this most probably due to deformed props.
This defect makes the AC much more prone to drift with stronger winds as it can't tilt/pitch down enough to create speed & fight against the wind.".
Although it didn't affect flight dynamics prior to this incident, my props were definitely worn out.

One last question: why do you think the connection to the aircraft was lost at some point at 935 meters? Is it a spec limitation?

Safe flights to all.

 

[Deleted member 103366]

In favourable conditions my CE MM has gone out just over 2km over open sea, in less favourable conditions I have started to lose signal at a couple of hundred metres. It all depends on what is between the drone and the antennae and maybe what radio interference is about.

 

[egadgetguy]

When i get a wind warning, i immediately drop it below 100 ft, and head back manually. It usually warns that RTH is unavailabla. I also dont push it past VLOS. It's too small [MM] to risk it. Sometimes i also put it in sport mode if im able. Once i was >1600 ft away and it was touch n go til i got within the point i could land safely

 

[egadgetguy]

Well, thank you all for your feedback.
Although, as I wrote, I flew my mini quite some times in similar wind conditions in higher altitudes, the outcome was entirely different. In the end, I don't believe that any reasonably seasoned pilot would risk their drone.
What makes the most sense to me is Slup's comment that: "It looks like this Mini ... as so many more, can't reach tilts according to spec. this most probably due to deformed props.
This defect makes the AC much more prone to drift with stronger winds as it can't tilt/pitch down enough to create speed & fight against the wind.".
Although it didn't affect flight dynamics prior to this incident, my props were definitely worn out.

One last question: why do you think the connection to the aircraft was lost at some point at 935 meters? Is it a spec limitation?

Safe flights to all.

I now use UAV forcast