IronSky1

[DroneWaysAustralia]

Hi,

First, I would like to introduce myself as an Australian Chief pilot and drone operator that use DJI drones
for professional use.

I have an URGENT and important question and need of your assistance.

Time ago I flew my drone Phantom 4 Plus V2 in a mountain area at about 700m above sea level.
It is at Mount Fox, 4850 Queensland, Australia.
I remember that day before I download on my DJI controller the last update from DJI.
Once I gave the command to the Phantom 4 Plus V2 to take off, it starts to fly first slowly up and then without any command speeding up in the sky vertical very high.
I realised that I lost the control, the motor signed max speed, I could not control the camera and it did not respond to my command to Return Home…
I had manually to command to go down and landing and finally it descended with speed even I tried to slow down and to stop it.
It finally landed hard with speed and the front UV Lens Glass Frame Gimbal Camera has been broken and need repair.
I cannot understand this abnormal behaviour even seem all has been well set up and the screen indicated ready to go.
This even I tried to fly in the beginner mode with the limitation of Altitude 30m and radius 30m of distance, however drone had the same behaviour.

Recently I I download again on my DJI controller the last update from DJI; however I am still hesitant to fly again until I may discover the reason of this drone behaviour.

Thank you very much for your concern and support.
Regards
Frank

 

[GFields]

Greetings from Birmingham Alabama USA, welcome to the forum!

Frank, do you by chance still have the flight logs?

 

[DroneWaysAustralia]

Sure, let me check and thank you for the prompt reply

 

[GFields]

Sure, let me check and thank you for the prompt reply

DJI Flight Log Viewer | Phantom Help

Upload and view DJI Phantom, Mavic, and Spark flight logs online

Paste the link here and perhaps @Meta4 can take a look at it.

 

[dirkclod]

Welcome to the forum.
I hope you will find our site helpful and look forward to any input , photo's/video's you might post .
Don't be shy and ask anything if you can't find it by searching .

 

[Meta4]

I have an URGENT and important question and need of your assistance.

I cannot understand this abnormal behaviour even seem all has been well set up and the screen indicated ready to go.

Recently I I download again on my DJI controller the last update from DJI; however I am still hesitant to fly again until I may discover the reason of this drone behaviour.

Frank ... If you can post your flight data, I'll look into it to see what I can find.
Also it would help if you can describe the spot you launched from.
What was the launch surface.

To post your flight data ...
Go to DJI Flight Log Viewer | Phantom Help
Follow the instructions there to upload your flight record from your phone or tablet.
That will give you a detailed report on the flight data.
Come back and post a link to the report it provides.
Or ... just post the .txt file.

ps ... I'm out in the bush at the moment and will be on the road tomorrow.
If you can post before 6.30am your time, I should be able to look at it, but will be remote for the rest of the day.

 

[DroneWaysAustralia]

Frank ... If you can post your flight data, I'll look into it to see what I can find.
Also it would help if you can describe the spot you launched from.
What was the launch surface.

To post your flight data ...
Go to DJI Flight Log Viewer | Phantom Help
Follow the instructions there to upload your flight record from your phone or tablet.
That will give you a detailed report on the flight data.
Come back and post a link to the report it provides.
Or ... just post the .txt file.

ps ... I'm out in the bush at the moment and will be on the road tomorrow.
If you can post before 6.30am your time, I should be able to look at it, but will be remote for the rest of the day.

Yes, thank you for the support. I had difficolties to get out these flight data and working on that. I will follow now your advices at: DJI Flight Log Viewer | Phantom Help and how to send you?

 

[Meta4]

Yes, thank you for the support. I had difficolties to get out these flight data and working on that. I will follow now your advices at: DJI Flight Log Viewer | Phantom Help and how to send you?

When you get the Phantomhelp Log Viewer report, you can just post the URL here.
Or just post the .txt file and I can work from that.

 

[DroneWaysAustralia]

DJI Flight Log Viewer - PhantomHelp.com

4m 11.9s

Auto Landing

17satellites

291.7ft

N/A

0mph

0.4ft

76%

15.067V

3.77V

3.78V

3.77V

3.75V

0.026V

===========================================================
DJI Flight Log Viewer - PhantomHelp.com

5m 27.1s

P-GPS

12satellites

3.9ft

0.3ft

0mph

4.0ft

24%

14.855V

3.71V

3.72V

3.71V

3.72V

0.004V

===========================================================

DJI Flight Log Viewer - PhantomHelp.com

2m 52s

P-GPS

12satellites

100.7ft

0.7ft

0mph

10.6ft

37%

13.875V

3.47V

3.47V

3.48V

3.46V

0.018V

===========================================================

DJI Flight Log Viewer - PhantomHelp.com

2m 56.8s

Confirm Landing

16satellites

27.2ft

0.3ft

0mph

3.9ft

85%

15.587V

3.90V

3.90V

3.90V

3.89V

0.012V

===========================================================

Greetings from Birmingham Alabama USA, welcome to the forum!

Frank, do you by chance still have the flight logs?

Yes, finally I could get the relevant one. Thank you for your concern

 

[DroneWaysAustralia]

Welcome to the forum.
I hope you will find our site helpful and look forward to any input , photo's/video's you might post .
Don't be shy and ask anything if you can't find it by searching .

Thank you for your warm welcome : )

 

[Meta4]

DJI Flight Log Viewer - PhantomHelp.com

4m 11.9s

Auto Landing

17satellites

291.7ft

N/A

0mph

0.4ft

76%

15.067V

3.77V

3.78V

3.77V

3.75V

0.026V

===========================================================
DJI Flight Log Viewer - PhantomHelp.com

5m 27.1s

P-GPS

12satellites

3.9ft

0.3ft

0mph

4.0ft

24%

14.855V

3.71V

3.72V

3.71V

3.72V

0.004V

===========================================================

DJI Flight Log Viewer - PhantomHelp.com

2m 52s

P-GPS

12satellites

100.7ft

0.7ft

0mph

10.6ft

37%

13.875V

3.47V

3.47V

3.48V

3.46V

0.018V

===========================================================

DJI Flight Log Viewer - PhantomHelp.com

2m 56.8s

Confirm Landing

16satellites

27.2ft

0.3ft

0mph

3.9ft

85%

15.587V

3.90V

3.90V

3.90V

3.89V

0.012V

===========================================================


Yes, finally I could get the relevant one. Thank you for your concern

Which of these flights was the one you are concerned about?
It would be a lot easier for me if I don't have to wade through all of them to work it out.

 

[DroneWaysAustralia]

Yes, one of these with high altitude:

DJI Flight Log Viewer - PhantomHelp.com

DJI Flight Log Viewer - PhantomHelp.com

or, if I do remember, this last one when P4P crashed:
DJI Flight Log Viewer - PhantomHelp.com

 

[DroneWaysAustralia]

I got many logs and I choose these few that I think are relevant.
May be work on the first one that is when went very hight without my command...

Thank you for your support

 

[Meta4]

I got many logs and I choose these few that I think are relevant.
May be work on the first one that is when went very hight without my command...

That one went to 295 ft, but each time it climbed, there was a corresponding joystick input.
So no mystery in that flight.

or, if I do remember, this last one when P4P crashed:
DJI Flight Log Viewer - PhantomHelp.com

There was a problem in this flight:

DJI Flight Log Viewer - PhantomHelp.com

You can see that as the drone climbs (IMU height increases), the VPS sensor is giving a false indication of height and shows 1 ft or less.

Something was causing the VPS sensors to give false height data.
It could have been something blocking their downward view or a malfunction of the sensors.

 

[DroneWaysAustralia]

Yes, the corresponding joystick input is because I was trying to stop climbing.
But it did not respond to my commands.

Yes, in this flight: DJI Flight Log Viewer - PhantomHelp.com
I am noticing that there is a problem on the VPS sensor.

What is your advice about that.
Is there something I can do myself to fix this problem and start to fly again?


PS: you have taken very beautiful photos of ships, which drone and camera are you using?

 

[DroneWaysAustralia]

Perhaps this is the cause of the problem...
This:

Gimbal Guard Camera Lens Protection Plate for DJI Phantom 4 Pro Drone Carbon Fiber Landing Gear Protector​

that I inserted to protect the landing legs of the drone...
Perhaps it has obstructed the VPS sensor?
Most probably yes.
I am sorry that I did not realise it before and I took too much of your time.
However they are working very well on landing hard but or I will find an other position more near the camera (without obstruct the lenses) or take it out.

I will now attempt to fly again : )

Thank you

 

[Meta4]

Yes, the corresponding joystick input is because I was trying to stop climbing.
But it did not respond to my commands.

That's not what I see in the data.
The joystick inputs correspond to the climbing.
Each time you pushed the left stick up and the drone climbed.
There was no uncommanded climbing in that flight ... it was quite normal.

 

[Meta4]

Perhaps this is the cause of the problem...
....
Perhaps it has obstructed the VPS sensor?

Definitely yes.
You could also disable the VPS sensors in the app settings.
I never found the downward sensors particularly useful.

PS: you have taken very beautiful photos of ships, which drone and camera are you using?

Thanks.
Most were with a Phantom 4 pro and I've started using a Mavic 3 this year too.