So I reported my dji air 3 today as flyaway because it didn't started RTH after it disconnected from RC for some reason (it was only hovering over trees). But after searching for it for few hours in forest I found it in the same place as signal was lost (couldn't find it before because it was probably on the tree). So after it hit ground there was damage done. Gimbal popped out from rubbers and slim connector cable is broken (there is still picture from gimbal tho, it only doesn't move). Also rear leg is broken a little bit (it doesn't unfold and fold properly).
Here is what I want: I want to collect flight logs from aircraft from the time that aircraft disconnected and drained battery and was lost. Flight logs did not synced after connecting it to rc (it was done next day), probably because battery drained and it did not count data for this flight anymore. Is there any way that I or dji support/repair service could access these logs from aircraft?
It is very important to me, because I think dji broken firmware is responsible for this (before v01.00.1400 update rth was working perfectly)and I think that I should receive free repair or aircraft replacement and I want to proof it.
Thanks in advance

Here is footage about what happend with my drone:

Getting the DAT log from the drone is probably a waste of time unless you are sending it to DJI. It is likely that they are encrypted and that only DJI can read them.
BUT as that seems to be your intention you probably need to install the relevant DJI Assistant 2 software
https://www.dji.com/uk/air-3/downloads
on your computer, start that software and then connect the drone to your computer via USB and copy the DAT/s to your computer.

The logs sent to the screen device are only recorded whilst there is a connection, they are not sent 'after the fact', so any logs that would have created during the disconnection are lost .... forever.

It would be useful if you would download the .txt flight log from the controller, upload it to
https://www.phantomhelp.com/LogViewer/Upload/
and post the URL here.
Or upload it to  
https://app.airdata.com
https://app.airdata.com/wiki/Hel ... ploads+for+US+Users

So I reported my dji air 3 today as flyaway because it didn't started RTH after it disconnected from RC for some reason.
Drones tend not to return home after they fall to the ground when power is lost.

Hi there, thank you reaching out and we're sorry to hear what happened with your drone. You may submit an online repair request through this link: {https://repair.dji.com/repair/index}. If you need assistance with creating a ticket, you may contact DJI support at https://www.dji.com/support. We understand that this is not the answer that you look forward to, but this would be the best thing to do in this situation. In addition, warranty service can be claimed depending on the result of the Damage Assessment.

Your kind understanding is appreciated and thank you for your continued support.

Someone mentioned change of RTH setting (from RTH to Hover) without notification after fw. update. But it remained in RTH position in my case...

Hi,

First step is to upload your flightllog for this issue.
Seen the video, so in the log most likely to find a reason why it hovered so long near that tree.

use this link > https://www.phantomhelp.com/LogViewer/Upload/
Post the uploaded link on here.

RTH is one of the most reliable part of the software, tested it out today an it works great on the latest FW.
cheers
JJB

virtual Posted at 7-8 01:56
Someone mentioned change of RTH setting (from RTH to Hover) without notification after fw. update. But it remained in RTH position in my case...

Which is one reason why XdekHckr is being asked for the .txt flight log.
The failsafe setting you refer to is recorded in the .txt flight log and can be seen if the log is uploaded to https://www.phantomhelp.com/LogViewer/Upload/
and the CSV downloaded from there.
The setting is shown in the column entitled "MC.failSafeAction".

Labroides Posted at 7-7 16:44
So I reported my dji air 3 today as flyaway because it didn't started RTH after it disconnected from RC for some reason.
Drones tend not to return home after they fall to the ground when power is lost.

Are you even reading what did I said? It lost connection, was hovering instead of rth. Then when battery drained it crashed into trees...

virtual Posted at 7-8 01:56
Someone mentioned change of RTH setting (from RTH to Hover) without notification after fw. update. But it remained in RTH position in my case...

I don't even see option for hover in rc 2 controller settings. There is only optimal or preset rth. I had optimal option enabled.

XdekHckr Posted at 7-8 06:55
Are you even reading what did I said? It lost connection, was hovering instead of rth. Then when battery drained it crashed into trees...

Are you even reading what did I said? It lost connection, was hovering instead of rth. Then when battery drained it crashed into trees...
Have you read what you posted?
There was no mention of the battery draining.
You just said .. it didn't started RTH after it disconnected from RC for some reason.
If you don't give any details how is anyone going to know?
How about posting your flight data like people have been asking?

I don't even see option for hover in rc 2 controller settings.

There are lots of things you aren't aware of, but there are people who know how to read details in the recorded flight data you wouldn't know were there.
If you want answers, post the data.

Sean-bumble-bee Posted at 7-7 14:18
It would be useful if you would download the .txt flight log from the controller, upload it to
https://www.phantomhelp.com/LogViewer/Upload/
and post the URL here.

The only one thing that I could dump from drone from that crash day is that .dat file. Unfortunately I don't have flight log on my rc (it is in cloud) from that day, anyway it was not full flight log on rc. Full flight log should be in that file from drone. The only one thing is that it looks like it is encrypted... I will just send my drone to dji and we will see what they will say. Anyway I am starting to hate dji more and more. Why would you not let me see inside my own drone logs and encrypt it?
Log file: https://drive.google.com/file/d/ ... TT/view?usp=sharing

Labroides Posted at 7-8 07:19
Are you even reading what did I said? It lost connection, was hovering instead of rth. Then when battery drained it crashed into trees...
Have you read what you posted?
There was no mention of the battery draining.

1. ok


2. interesting, I'm only aware about hover function only in waypoint mode, but I checked on youtube and there is indeed advanced safety option about that, anyway, it should not be hidden like this, also I did not changed it by myself ever, it must have changed after rc or aircraft update...

Yes, in safety options there are 3 behaviour possibilities if connection to RC is lost - RTH, Hover or Land.
It is always good to prevent the transmission interference, actualy the VLOS flying in EU is mandatory. If You are pushing the limits it is usually possible to regain connection by changing the position of remote (put it higher).

XdekHckr Posted at 7-8 07:34
The only one thing that I could dump from drone from that crash day is that .dat file. Unfortunately I don't have flight log on my rc (it is in cloud) from that day, anyway it was not full flight log on rc. Full flight log should be in that file from drone. The only one thing is that it looks like it is encrypted... I will just send my drone to dji and we will see what they will say. Anyway I am starting to hate dji more and more. Why would you not let me see inside my own drone logs and encrypt it?
Log file: https://drive.google.com/file/d/17eNIhVVJVpJdVp8c8VnpsgGDJzG6-9TT/view?usp=sharing

"Unfortunately I don't have flight log on my rc (it is in cloud) from that day"
what is this "cloud" you refer to ?
Desribe the procedure you used to upload the logs to the "cloud" ?

A suggestion, install the fly app on a phone, preferably Android, log into the app/your-DJI-account using the same details you used to log into the app on the controller. In the app trigger a sync.
If your ''cloud'' is the normal sync that gave you your avatar's ''Flight distance : 890827 ft'' then that should download the synced flight logs from DJI to your phone.
If it is and does then connect the phone to a computer, look at the instructions on the phantomhelp website, find the flight log on the phone, copy it to the computer, upload that copy to the phantomhelp website and post the resulting URL here.

XdekHckr Posted at 7-8 07:34
The only one thing that I could dump from drone from that crash day is that .dat file. Unfortunately I don't have flight log on my rc (it is in cloud) from that day, anyway it was not full flight log on rc. Full flight log should be in that file from drone. The only one thing is that it looks like it is encrypted... I will just send my drone to dji and we will see what they will say. Anyway I am starting to hate dji more and more. Why would you not let me see inside my own drone logs and encrypt it?
Log file: https://drive.google.com/file/d/17eNIhVVJVpJdVp8c8VnpsgGDJzG6-9TT/view?usp=sharing

Why would you not let me see inside my own drone logs and encrypt it?
There are people who are clever enough to read that data which you can't (and they know a lot more about your drone than you do.

Log file: https://drive.google.com/file/d/ ... TT/view?usp=sharing
That's not the file that people have been asking you for.
Please post the .txt file from your flight and you'll get actual answers to your questions.

Go to: https://www.phantomhelp.com/LogViewer/Upload/
... where you'll find instructions.
That will give a report you can post a link for the report here.

Or if you use Airdata, post a link to the Airdata report for the flight.

Or just post the .txt file.

The location of the file in your controller is:
Android\data\dji.go.v5\files\FlightRecord

I'm glad that they at least decieded to repair my aircraft for free

Labroides Posted at 7-8 14:31
Why would you not let me see inside my own drone logs and encrypt it?
There are people who are clever enough to read that data which you can't (and they know a lot more about your drone than you do.

1. This "wrong" file comes from drone, it was downloaded via assistant 2 app. I understand that it might not be the file you guys were asking for, but it is what it is.
2. The flight file from controller will be useless as I said, it only contains info about before connection was lost, not after.
3. Anyway after connecting controller to pc via usb c there is no internal storage shown. Controller doesn't even have file browser by itself, soo...
+ I don't have controller anymore, because it was sent to dji for further investigation and repair.

I might try to get this log file later after I receive my repaired drone (if it will be even possible)

XdekHckr Posted at 7-12 03:40
1. This "wrong" file comes from drone, it was downloaded via assistant 2 app. I understand that it might not be the file you guys were asking for, but it is what it is.
2. The flight file from controller will be useless as I said, it only contains info about before connection was lost, not after.
3. Anyway after connecting controller to pc via usb c there is no internal storage shown. Controller doesn't even have file browser by itself, soo...

2. The flight file from controller will be useless as I said, it only contains info about before connection was lost, not after.
It would still explain more about your flight that your confusing posts so far.

Sean-bumble-bee Posted at 7-8 09:04
"Unfortunately I don't have flight log on my rc (it is in cloud) from that day"
what is this "cloud" you refer to ?
Desribe the procedure you used to upload the logs to the "cloud" ?

Okay, fortunately I have rooted phone and I was able to access data folder and here are logs that I recovered:
https://www.phantomhelp.com/logv ... 74M0URCELZGMREQN0TA

XdekHckr Posted at 7-12 04:44
Okay, fortunately I have rooted phone and I was able to access data folder and here are logs that I recovered:
https://www.phantomhelp.com/logviewer/KMA8C2U1FY3X574M0URCELZGMREQN0TA

great though I am surprised it required rooting the phone.

Jeepers that's a long way out.
In what follows I am not being nasty, the following comments are based on what I see in the csv.

1) It didn't RTH on disconnection because failsafe was set to hover, column DO in the Phantomhelp CSV.
That said I have to ask, did you cancel a low battery RTH at some point in the flight?
If so that would explain why it didn't ''Low Battery RTH'' after the disconnection.
Low battery RTH is, as far as I know, a ''one time only per flight'' offer, cancel it and the drone will not offer another automated low battery RTH during that flight.
I assume you did cancel a low battery RTH because I would have expected the low battery RTH to kick in somewhere from the 14th minute onwards.

2) You launched the drone with the battery at 82%. That is, in my opinion, not a good idea for such a long flight. You should have launched with a fully charged battery and NOT used approximately 1/2 the available charge during the out bound flight.

3) If you did not cancel a Low Battery RTH then you got VERY lucky in this flight. If a Low Battery RTH had kicked in after the disconnection then the drone would, almost certainly, have entered low-battery forced-landing whilst en-route to the home point, possibly over the fields and possibly whilst still disconnected.
Finding it would then have meant a long careful walk along the RTH flight path.

4) You lost connection because of the drone's height and distance, which meant that the line of sight between the drone and the controller was, I think, 1/2deg above the horizontal and going straight through a fair bit of forest, forest eats signal.

5) I think the flight goes down as pilot error even if ''Low Battery RTH'' failed to kick in.


I think you were very, very lucky that it landed at a 'known' position, I strongly suggest you do not ''push your luck'' so far again, otherwise I think you are going to lose the drone.

virtual Posted at 7-8 01:56
Someone mentioned change of RTH setting (from RTH to Hover) without notification after fw. update. But it remained in RTH position in my case...

Someone mentioned change of RTH setting (from RTH to Hover) without notification after fw. update
Someone was wrong.
The default setting for Loss of Signal Action is RTH.
A firmware update would only change it to the default setting which is RTH.

XdekHckr Posted at 7-8 07:40
1. ok
[view_image]

As already pointed out your drone didn't come home and stayed hovering where it lost signal because the Loss of Signal Action was set to Hover instead of the default setting of RTH.

interesting, I'm only aware about hover function only in waypoint mode, but I checked on youtube and there is indeed advanced safety option about that, anyway, it should not be hidden like this, also I did not changed it by myself ever, it must have changed after rc or aircraft update...
The Loss of Signal Action won't change from the default setting unless the flyer changes it.
A firmware update would never change it from RTH.

Your LOS action was set to Hover because you changed it.

Sean-bumble-bee Posted at 7-12 06:09
great though I am surprised it required rooting the phone.

Jeepers that's a long way out.

Thanks for detailed answer.
Android 14 requires root or special permissions, which not every phone has as an option to access data folders.
1. I don't think I canceled it by clicking the button on the controller. However, I could have canceled the low battery message because I wanted to manually go home. Although I think he should go home on his own after losing the connection.
I had few small flights that day before and I had no issue, rth was kicking in immediately after connection was lost. Maybe aircraft was thinking somehow that it's still connected to controller and it did nothing to move...
Well maybe there is something I don't know or don't understand.
2. You are right, also battery was draining really fast that day for no reason.

I will be more careful next time and I plan to buy 4G modem to never lose connection + I will always know where aircraft is.

After all I will try to ask dji support for detailed raport about what happend, wish me luck.

Labroides Posted at 7-12 06:32
As already pointed out your drone didn't come home and stayed hovering where it lost signal because the Loss of Signal Action was set to Hover instead of the default setting of RTH.

interesting, I'm only aware about hover function only in waypoint mode, but I checked on youtube and there is indeed advanced safety option about that, anyway, it should not be hidden like this, also I did not changed it by myself ever, it must have changed after rc or aircraft update...

I swear to god I wasn't changing it in settings. The only thing that could be is that I was testing waypoints and I used hover option in that, but it shouldn't change my normal settings! Anyway after I turned off controller in waypoint mode to test if it will come back, it did. This must be a bug!

XdekHckr Posted at 7-12 06:48
I swear to god I wasn't changing it in settings. The only thing that could be is that I was testing waypoints and I used hover option in that, but it shouldn't change my normal settings! Anyway after I turned off controller in waypoint mode to test if it will come back, it did. This must be a bug!

I swear to god I wasn't changing it in settings. The only thing that could be is that I was testing waypoints and I used hover option in that, but it shouldn't change my normal settings! Anyway after I turned off controller in waypoint mode to test if it will come back, it did. This must be a bug!
It's not a bug.
The RTH function is well tested and very reliable .. it has to be.
Because RTH on loss of signal is so important, it won't ever change unless someone changes it.
The data is very clear, from the start of the flight the Failsafe Action was set to hover.

XdekHckr Posted at 7-12 06:46
Thanks for detailed answer.
Android 14 requires root or special permissions, which not every phone has as an option to access data folders.
1. I don't think I canceled it by clicking the button on the controller. However, I could have canceled the low battery message because I wanted to manually go home. Although I think he should go home on his own after losing the connection.

"also battery was draining really fast that day for no reason."
If you upload the .txt flight log to https://app.airdata.com
then open the weather tab, you will see what airdata thinks was the wind during the flight ( there is no need to post a link to the page) .
You can see instantaneous wind speeds in the Phantomhelp CSV, column EY "WEATHER.windSpeed [MPH]"

On the out bound leg it looks to me as if the drone was fighting a mixed partial headwind ( that's a good thing ) and sidewind and virtually the entire outbound leg was near maximum pitch. 35deg.
It 'ate' a lot of battery getting out there, that fast.  
Damn it I can't alter the placement of the charts, they were meant to be at the end of the post, not in the middle, sorry about that.


Attached are plots showing the output given by CsvView
https://datfile.net/CsvView/downloads.html
after processing the Phantomhelp CSV

You might see that the battery current is quite subsantial whilst you had full elevator applied on the out bound leg and ground speed flucuates quite a lot presumably due to head wind.
The peak battery current around 500 sec was whilst you commanded a climb.

Labroides Posted at 7-12 07:23
I swear to god I wasn't changing it in settings. The only thing that could be is that I was testing waypoints and I used hover option in that, but it shouldn't change my normal settings! Anyway after I turned off controller in waypoint mode to test if it will come back, it did. This must be a bug!
It's not a bug.
The RTH function is well tested and very reliable .. it has to be.

Ok so I checked my last flight (the flight before I actually crashed). And my conculsions are that hover status was saved into controller after using waypoint mode. Which I don't think should happen. If this is not bug, then I don't know what is...
Proofs:
https://www.phantomhelp.com/LogV ... HIQFP10UWDL0MOF3A7F

here is another normal flight before crash, the same day: https://www.phantomhelp.com/LogV ... SA966H2J744R34HSLZY

Sean-bumble-bee Posted at 7-12 08:12
"also battery was draining really fast that day for no reason."
If you upload the .txt flight log to https://app.airdata.com
then open the weather tab, you will see what airdata thinks was the wind during the flight ( there is no need to post a link to the page) .

Thanks for confirming, was thinking that it was about weather (wind/temperature). May I know what java app do you use to present this data?

XdekHckr Posted at 7-12 08:14
Thanks for confirming, was thinking that it was about weather (wind/temperature). May I know what java app do you use to present this data?

"Attached are plots showing the output given by CsvView
https://datfile.net/CsvView/downloads.html
after processing the Phantomhelp CSV"

XdekHckr Posted at 7-12 08:12
Ok so I checked my last flight (the flight before I actually crashed). And my conculsions are that hover status was saved into controller after using waypoint mode. Which I don't think should happen. If this is not bug, then I don't know what is...
Proofs:
https://www.phantomhelp.com/LogViewer/YHKWRC86TSDMLHIQFP10UWDL0MOF3A7F

In the log shown on
https://www.phantomhelp.com/LogV ... HIQFP10UWDL0MOF3A7F   i.e. DJIFlightRecord_2024-07-06_[19-49-11].txt
the failsafe action changes mid flight, @308.8 seconds, from gohome to hover.

Sean-bumble-bee Posted at 7-12 08:31
In the log shown on
https://www.phantomhelp.com/LogViewer/YHKWRC86TSDMLHIQFP10UWDL0MOF3A7F   i.e. DJIFlightRecord_2024-07-06_[19-49-11].txt
the failsafe action changes mid flight, @308.8 seconds, from gohome to hover.

Yes. I was doing waypoint mode and settings in waypoint mode were set to hover + something with rth I think. I turned controller off mid flight and I think this caused to change these settings permanently. I shouldn't turn off controller while not closing waypoint mode mission, that caused this behaviour probably.
Next time I will always check these settings before flight to be sure that nothing was changed. Also after I will receive my drone back I will do simulation to check my theory.
Have a nice day

XdekHckr Posted at 7-12 08:46
Yes. I was doing waypoint mode and settings in waypoint mode were set to hover + something with rth I think. I turned controller off mid flight and I think this caused to change these settings permanently. I shouldn't turn off controller while not closing waypoint mode mission, that caused this behaviour probably.
Next time I will always check these settings before flight to be sure that nothing was changed. Also after I will receive my drone back I will do simulation to check my theory.
Have a nice day

It might be an idea to fly a few test flights to confirm or refute  
"I turned controller off mid flight and I think this caused to change these settings permanently."
and if you confirm it, raise the matter in a separate thread.

I think this would need to be rectified by DJI if it is what happens.

Checking is always a good idea. I forgot to change it back once  and only by chance checked it. EEEEEK !

XdekHckr Posted at 7-12 08:46
Yes. I was doing waypoint mode and settings in waypoint mode were set to hover + something with rth I think. I turned controller off mid flight and I think this caused to change these settings permanently. I shouldn't turn off controller while not closing waypoint mode mission, that caused this behaviour probably.
Next time I will always check these settings before flight to be sure that nothing was changed. Also after I will receive my drone back I will do simulation to check my theory.
Have a nice day

This has nothing to do with turning off the controller.
You changed a setting that applies to any subsequent flights (unless you change it again) and think that's a bug?

2. You are right, also battery was draining really fast that day for no reason.
The reason is quite simple.
You were flying at full stick in SPort Mode.
That burns battery more quickly than Normal Mode does.

Labroides Posted at 7-12 15:00
This has nothing to do with turning off the controller.
You changed a setting that applies to any subsequent flights (unless you change it again) and think that's a bug?

1. Yeah, if it doesn't change back after getting out of waypoint mode to default settings then it should be considered as a bug. Also I did not changed these settings in settings panel, I was only using waypoint mode settings, in my opinion, this should not affect the rest of the settings after ending waypoint mode.
2. No way Sherlock

XdekHckr Posted at 7-12 22:50
1. Yeah, if it doesn't change back after getting out of waypoint mode to default settings then it should be considered as a bug. Also I did not changed these settings in settings panel, I was only using waypoint mode settings, in my opinion, this should not affect the rest of the settings after ending waypoint mode.
2. No way Sherlock

1. Yeah, if it doesn't change back after getting out of waypoint mode to default settings then it should be considered as a bug.
....  in my opinion, this should not affect the rest of the settings after ending waypoint mode.
Was there any wording to suggest to you that the change you made would only have effect on a particular waypoint mission?
Or did you just guess that?

2. No way Sherlock
No way what?
No way you weren't flying full stick in Sport Mode?
or
No way that Sport Mode burns battery faster than Normal Mode ?

Both statements were 100% correct.
You flew in Sport Mode at full stick and Sport Mode does burn the battery faster.