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LOST MAVIC IN SMALL BREEZE
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523 42 2017-7-16 10:04:52
fansc2af4a56
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Hello was flying my drone yesterday and it just started moving itself it took off over a house in a state so I tried to bring it back and wouldn't work it would just stop I pressed return to home then it was only doing 0.2 KPH  so I tried sport mode and nothing seemed to work  I had flown in stronger wins than the one I lost it in yesterday I don't know why it wasn't able to cope.
I go to the GPS signal and there is nothing  there I asked the owner of the land could I look and she was lovely she let me check everywhere in the area.it's a big lot of land the neighbour brought me out to look for it and it just wasn't there.
So I go to my flight records and I noticed that there is a gap right at the end when it goes off for at least 15 seconds it jumps.The GPS shows it moved about 50 m in a split seconds which  is impossible but it has it on the flight record.

Thanks

Andy
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2017-7-16 10:04:52
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Lucas775
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Oh no! hope you find it.
2017-7-16 10:19:37
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DroneFlying
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Hello was flying my drone yesterday and it just started moving itself it took off over a house in a state so I tried to bring it back and wouldn't work

It sounds like you might have taken off from a geomagnetically distorted location. What kind of surface (e.g., road or sidewalk) did you use for takeoff?

So I go to my flight records and I noticed that there is a gap right at the end when it goes off for at least 15 seconds it jumps.The GPS shows it moved about 50 m in a split seconds which  is impossible but it has it on the flight record.

That's typical of ATTI mode where GPS is disabled: that portion of the flight log won't show the aircraft's position being updated because it doesn't know where it was during that time.

There's a TXT file on your mobile device that contains some information about the flight. Locate the appropriate log, upload it using these instructions, provide a link to the uploaded log in this thread, and someone here may be able to suggest the best place for you to look for it.
2017-7-16 10:55:14
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hallmark007
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In your first screenshot it was at critical battery 15% in the red, it should have went into landing as it says at top left. Did you have control then?
2017-7-16 11:44:43
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Bekaru Tree
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have you checked yr FIND MY DRONE function - see where it is (probably/hopefully) located in that section.
Open the app - on the first screen before entering the devise at the top right corner are 3 horizontal bars for menu - open the menu - go to FIND MY DRONE - post and image of that screen shot - hopefull go pick up yr drone at that location - this is personal experiance (happened to me on saturday)
2017-7-16 12:56:42
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fansc2af4a56
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DroneFlying Posted at 2017-7-16 10:55
Hello was flying my drone yesterday and it just started moving itself it took off over a house in a state so I tried to bring it back and wouldn't work

It sounds like you might have taken off from a geomagnetically distorted location. What kind of surface (e.g., road or sidewalk) did you use for takeoff?

It took off from the ground like concrete tar  it was mainly the wind it just wouldn't come back for some reason
2017-7-16 13:06:06
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 13:06
It took off from the ground like concrete tar  it was mainly the wind it just wouldn't come back for some reason

Concrete often has (steel) rebar embedded within it, which can cause a problem with the Mavic's compass, but in any case once you upload the flight log we may be able to suggest where to look.
2017-7-16 13:12:03
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fansc2af4a56
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@droneflying  I took off just from normal ground and it was the wind at first I didn't notice that it was moving but when I did noticed it was gone fast and when I pressed turn around and try move it back it was down 0.2 km then I did return to home mode and I just went to 1 to 2 km so  if you seconds  I jumped into my jeep and Dhruv towards it I was half way between the take off and last location  when it said Landing  
2017-7-16 13:12:51
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fansc2af4a56
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How do I upload the flight log.
I know where it is Sync it  but don't know how to upload it onto this
2017-7-16 13:14:29
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 13:14
How do I upload the flight log.
I know where it is Sync it  but don't know how to upload it onto this

The instructions for retrieving the TXT file are here. Once you've got the correct file, upload it to that same web page and then provide a link to the log in this thread.
2017-7-16 13:13:24
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fansc2af4a56
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It tells me  export success  CSV filse location  and then some link do I post this link here  because it doesn't let me click on it
2017-7-16 13:37:00
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fansc2af4a56
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fansc2af4a56 Posted at 2017-7-16 13:37
It tells me  export success  CSV filse location  and then some link do I post this link here  because it doesn't let me click on it

I'm just typing this off my iPhone 7 I don't have a laptop with me  is that okay
2017-7-16 13:37:31
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fansc2af4a56
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See the top right corner  when I press that that's when it comes up successfully exported
IMG_0682.PNG
2017-7-16 13:42:35
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fansc2af4a56
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Is it okay to post the link in this public forum
2017-7-16 13:44:25
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 13:44
Is it okay to post the link in this public forum

Yes, people do it all the time.
2017-7-16 13:46:17
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fansc2af4a56
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DroneFlying Posted at 2017-7-16 13:46
Yes, people do it all the time.


http://Okay

http://That\'s a photo of it I will type it out also  is it because I am using the iPhone that I can\'t  download
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2017-7-16 13:50:16
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DroneFlying
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That's not correct. Be sure to follow the instructions on the PhantomHelp page for accessing the correct file. It will have an extension of TXT and once you've retrieved it from your mobile device you'll be able to upload it by selecting it after you click on the "Upload Log" file on that page.
2017-7-16 13:56:38
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fansc2af4a56
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Is that any use
2017-7-16 13:56:42
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fansc2af4a56
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DroneFlying Posted at 2017-7-16 13:56
That's not correct. Be sure to follow the instructions on the PhantomHelp page for accessing the correct file. It will have an extension of TXT and once you've retrieved it from your mobile device you'll be able to upload it by selecting it after you click on the "Upload Log" file on that page.


http://I\'m mavic is this not mavic
2017-7-16 13:57:33
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DroneFlying
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No. Please follow the instructions on the PhantomHelp page for uploading the file. Once you've uploaded it then copy the URL it generates and post it here.
2017-7-16 13:57:46
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fansc2af4a56
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Okay thanks very much for your patience and help.
I just got a laptop and about to do it now
2017-7-16 14:18:41
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fansc2af4a56
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I just managed to get the link
2017-7-16 15:34:27
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 15:34
I just managed to get the link

Excellent. Post it here and we'll take a look and may be able to recommend where to resume searching.
2017-7-16 15:32:44
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fansc2af4a56
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https://app.airdata.com/main?flight=2e67bb9ecd93f097ade70ea00edd02c4&page_id=GENERALDetails
2017-7-16 15:40:42
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fansc2af4a56
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Again sorry about that delay  well I didn't think there was so much stuff encoded into the flight data
2017-7-16 15:41:19
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fansc2af4a56
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fansc2af4a56 Posted at 2017-7-16 15:40
https://app.airdata.com/main?flight=2e67bb9ecd93f097ade70ea00edd02c4&page_id=GENERALDetails


https://app.airdata.com/main?flight=2e67bb9ecd93f097ade70ea00edd02c4&page_id=GENERALDetails
2017-7-16 15:41:50
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DroneFlying
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Can you also upload the TXT file to PhantomHelp? It provides a bit more information that might be useful.
2017-7-16 15:46:46
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fansc2af4a56
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DroneFlying Posted at 2017-7-16 15:46
Can you also upload the TXT file to PhantomHelp? It provides a bit more information that might be useful.

Is that all the jumbled up words and comments digits all of that stuff  it's about two pages long
2017-7-16 15:48:18
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 15:48
Is that all the jumbled up words and comments digits all of that stuff  it's about two pages long

The TXT file when edited looks like a random jumble of characters, yes.
2017-7-16 15:50:58
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fansc2af4a56
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Is this the one in the picture ☝
image.jpg
2017-7-16 15:51:20
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DroneFlying
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Offhand it appears that what happened is that RTH was initiated because your battery level was getting low and the Mavic wound up running out of power before it could complete the return trip. Looking at the log I can see it getting closer to the home point -- but just barely -- as the battery level gets progressively lower.

What people sometimes don't realize is that the wind is often significantly stronger as altitude increases. AirData indicates that the winds at ground level were moderate during your flight (about 15 MPH / 24 KPH) and unfortunately you were fighting a headwind on the return trip. Another thing that new pilots often aren't aware of is that the Mavic won't use sport mode speeds during RTH, so even the ground level winds would have been a challenge during the return trip.

If you look at the last notification "l" (lower case "el") in the AirData notifications tab, you'll see the exact location at which it began landing ("Mode changed to AutoLanding"), apparently because it reached the critically low battery level. I believe if you search in and around that location you'll find it there, but based on the map data it might have wound up in a tree.

2017-7-16 15:56:03
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 15:51
Is this the one in the picture ☝

Yes, that's probably it. It'll be the same file that you uploaded to AirData.
2017-7-16 16:00:48
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fansc2af4a56
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DroneFlying Posted at 2017-7-16 15:56
Offhand it appears that what happened is that RTH was initiated because your battery level was getting low and the Mavic wound up running out of power before it could complete the return trip. Looking at the log I can see it getting closer to the home point -- but just barely -- as the battery level gets progressively lower.

What people sometimes don't realize is that the wind is often significantly stronger as altitude increases. AirData indicates that the winds at ground level were moderate during your flight (about 15 MPH / 24 KPH) and unfortunately you were fighting a headwind on the return trip. Another thing that new pilots often aren't aware of is that the Mavic won't use sport mode speeds during RTH, so even the ground level winds would have been a challenge during the return trip.

YES i pressed RTH but when wasnt working i tried sport and the power caused the last RTH

2017-7-16 16:03:45
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fansc2af4a56
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DroneFlying Posted at 2017-7-16 16:00
Yes, that's probably it. It'll be the same file that you uploaded to AirData.

Yes it's very long now there's thousands of comments on letters and everything
2017-7-16 16:06:08
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 16:06
Yes it's very long now there's thousands of comments on letters and everything

That's ok; analysis would have been a little easier through PhantomHelp, but at this point I don't think it'll really add much. You need to be looking in and around the location where it says near the end of the notifications that it was landing. I can pretty much guarantee you that it wound up in that location and hopefully it's still there.
2017-7-16 16:08:33
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fansc2af4a56
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The location what says were it is
2017-7-16 16:08:56
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fansc2af4a56
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I tried but look what it says
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2017-7-16 16:09:56
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hallmark007
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There is no csv file with that however, you can tell that you started your mission on 90% battery, you flew straight out and kept going until RTH turned you around , at that stage you only had 40% battery left, so you were never going to make it home , your AC went into RTH because you lost RC signal, but it was heading into a 15mph wind you were quite high so it may not have felt like that to you on the ground, although you were trying to put AC into sport mode, because you had no signal or AC was already in RTH you can't switch into sport mode. Regards to missing time and thinking Aircraft was flying to fast, that's just a result of data loss.

Lastly near the end of your log it shows AC going into critical battery and initiating landing this is where your airdata log ends so one would think your AC is in that vicinity.
2017-7-16 16:14:58
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 16:08
The location what says were it is

It landed right here. It is -- or at least was -- very near the location pinpointed on that map.

P.S. Don't worry about uploading to PhantomHelp any more. I think I was able to get all the useful information I needed from AirData this time.

2017-7-16 16:17:12
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DroneFlying
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fansc2af4a56 Posted at 2017-7-16 16:09
I tried but look what it says

Also, the specific coordinates where it landed are 53.269085460893, -6.17702348558134. Assuming that your phone has GPS and you have the property owner's permission, you can walk around the area until you find the location that matches those coordinates and the Mavic should be very close by at that point. Though again, based on what I'm seeing in the map it may be stuck in a tree.
2017-7-16 16:21:46
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