Lost MP

[grant’s]

Ok lost my drone on RTH. Lost connection and it might have flown away. DJI Go4 “lost my drone” says it’s at home point. Airdata indicates it carried on for about 1.5km away. Conflicting information. Panic sets in. Any tips?

 

[FLDave]

Show us the data.

 

[grant’s]

How?

 

[grant’s]

 

[MAvic_South_Oz]

How?

Section 3, post the phantomhelp report link, or post the txt file here.

Mavic Flight Log Retrieval and Analysis Guide

With the introduction of the Mavic Mini there has been a noticeable uptick in the number of posts requesting help with lost or crashed aircraft. While there is plenty of help and advice available on this forum, and detailed guidance and options on several other websites, I thought that perhaps a...

mavicpilots.com

 

[grant’s]

Gg

 

[grant’s]

DJI Flight Log Viewer - PhantomHelp.com

 

[grant’s]

Like that?

 

[grant’s]

Ok lost my drone on RTH. Lost connection and it might have flown away. DJI Go4 “lost my drone” says it’s at home point. Airdata indicates it carried on for about 1.5km away. Conflicting information. Panic sets in. Any tips?

“Find My Drone”

 

[MAvic_South_Oz]

Like that?

Yep.
No other logs for the same flight ? Before ?

That one started 6 minutes into your flight . . . was the home point on the map in the flight report the actual home point where you were ?

Lots of errors here obviously.
It started auto landing close to home (when RTH was activated), but then the yaw error took it away, thankfully slowly most of the time, but looks like it lost signal connection at the end, while still trying to auto land.

Someone with log reading experience might be able to tell if it might have tried to immediately descend when it lost connection, but if the yaw error might have stayed, they will have to project where it might have come down, to enable you to have a place to start your search.

Why did you left stick up (take it so high) above the home point up to the 10 minute mark ?
It went into auto land when you presumably pushed the RTH button, but descent was so slow.
Then the yaw errors half a minute later saw the drone start to drift to the SW, compass errors too, and I saw an IMU warning in there around that time.

It probably would have landed in that park area if you hadn't gone back onto the left stick up and taken it from 30' or so altitude back up to 95' or so.

Up and down a little from there until the end of the flight when it would have continued to auto land and yaw error drift.
At least that all seems consistent.

My guess looking at progress is it might not have got out over the ocean there, but it might need some extra special analysis by @slup or @sar104 for the projection.

Good luck !!

 

[grant’s]

Yes the home point is as indicated. This is the last log where all went to hell in a haybasket.

 

[grant’s]

I was still hoping Tibet tíbio and home to the end

 

[grant’s]

I was still hoping to get it up and home to the end

 

[Ralph thompson]

Do you think it all comes down to a compass error. You may see in more detail in the logs before you took off. Im guessing the whole system including RTH & auto land get confused if the compass and IMU disagree. It then just drifted off. Just guessing.

 

[retiredNH]

I presume the OP/pilot kept VLOS? What did he see?
Or, is this yet another case of someone not keeping VLOS and relying on RTH a bit too heavily?

 

[grant’s]

?

 

[MAvic_South_Oz]

It's odd that no one that is really good at these projections has come along.
Perhaps it's just the time of year and people are on breaks from tech or busy with other things.

 

[grant’s]

**** happens