issue with maintain stability in the air

[assassin23]

Hey folks some of u already know the situation, and i need your advice ... Mavic 3 pro...
The flight took place in an open area, specifically in a park above a lake.
At the beginning, the sensors were giving me warnings, so I decided to turn them off.
While flying, everything seemed fine for about three minutes. However, as I got closer to the lake, something went wrong. Suddenly, I noticed through the camera that the drone was descending. I pushed forward as quickly as possible to try to steer it away from the lake, but it crashed immediately.
Today, I hired divers to retrieve the drone and paid for their services. Now, I have the drone back after it spent three days in the lake.

 

[Meta4]

Hey folks some of u already know the situation, and i need your advice ... Mavic 3 pro...
The flight took place in an open area, specifically in a park above a lake.
At the beginning, the sensors were giving me warnings, so I decided to turn them off.
While flying, everything seemed fine for about three minutes. However, as I got closer to the lake, something went wrong. Suddenly, I noticed through the camera that the drone was descending. I pushed forward as quickly as possible to try to steer it away from the lake, but it crashed immediately.
Today, I hired divers to retrieve the drone and paid for their services. Now, I have the drone back after it spent three days in the lake.

The SD card should still be OK but your dunked drone is probably never going to work properly.

You might be able to find out why the incident happened to help prevent a similar occurrence in future, if you post your flight data.
There are a couple of options ...

1. 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 and someone might be able to analyse it and give you an understanding of the cause of the incident.
or
2. Just post the .txt file here
or
3. If you use Airdata, you can view the flight data on Airdata and post a link for the Airdata report

 

[kentdavidge]

DJI drones are known to stop responding to commands once they are flown over large bodies of water, such as lakes or rivers.

 

[Meta4]

DJI drones are known to stop responding to commands once they are flown over large bodies of water, such as lakes or rivers.

After 10,000 miles flying over water, I can confidently say that's just not true.
Your drone will fly over water just as it flies over solid ground.
What's down below makes no difference to the drone.

 

[Cafguy]

DJI drones are known to stop responding to commands once they are flown over large bodies of water, such as lakes or rivers.

While it is a known issue and pilots should be aware of it when flying over water, It is VERY rare and everything I have seen says that it tends to happen only around sunrise or sunset or on very bright days. It can happen tho, I have never seen it happen myself and I have been over water plenty of times, I don't think it would have anything to do with the crash.
Sorry about the Drone.

 

[Droning on and on...]

DJI drones are known to stop responding to commands once they are flown over large bodies of water, such as lakes or rivers.

No they're not. This is utterly false.

Flights over lakes, ocean happen every day without incident. I have dozens of over-water flights, some within 10ft or less, without incident.

This was shot with an Air 2S...

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[kentdavidge]

@Droning on and on... @Cafguy @Meta4

I apologize for my conclusion that was based solely on 2 YouTube videos of DJI drones suddenly getting out of control and crashing into the water by themselves. I should have known that many other people around the world fly them and have no issue.

 

[Droning on and on...]

@Droning on and on... @Cafguy @Meta4

I apologize for my conclusion that was based solely on 2 YouTube videos of DJI drones suddenly getting out of control and crashing into the water by themselves. I should have known that many other people around the world fly them and have no issue.

No apology necessary, buddy! I've been wong before... once

 

[Meta4]

While it is a known issue ...

It's not

everything I have seen says that it tends to happen only around sunrise or sunset or on very bright days.

Sunrise or sunset or very bright days?
So just about any time.

It's just a myth with no truth in it.

 

[Capt KO]

Murphy's Law

 

[Droning on and on...]

@Cafguy may be pulling from brain cobwebs the known issue of OA detecting false obstacles at dawn/dusk or pointing into bright sunlight.

I've experienced this myself on the Avata and M4P.

 

[Cafguy]

DJI's stance on the "myth"
From DJI support:
"When flying a DJI drone over water, the sensors can experience issues due to the reflection of light on the water surface, often causing the drone to become unstable or erratically adjust altitude, particularly when flying too low; this is mainly because the vision positioning system (VPS) used by DJI drones can struggle to accurately read the water's surface, leading to potential flight problems."
So theres that.

 

[Meta4]

DJI's stance on the "myth"
From DJI support:
"When flying a DJI drone over water, the sensors can experience issues due to the reflection of light on the water surface, often causing the drone to become unstable or erratically adjust altitude, particularly when flying too low; this is mainly because the vision positioning system (VPS) used by DJI drones can struggle to accurately read the water's surface, leading to potential flight problems."
So theres that.

DJI contributing to the myth.
Just as they contributed to myths about the compass for years.
DJI support aren't drone flyers and aren't to be relied upon for technical information.

The idea that drones lose control over water is absolute hokum.

 

[MS Coast]

DJI's stance on the "myth"
From DJI support:
"When flying a DJI drone over water, the sensors can experience issues due to the reflection of light on the water surface, often causing the drone to become unstable or erratically adjust altitude, particularly when flying too low; this is mainly because the vision positioning system (VPS) used by DJI drones can struggle to accurately read the water's surface, leading to potential flight problems."
So theres that.

If it happened "often" we'd hear about more incidents. The risk is on the same order as the risk of bad guys tracking you down with RID and robbing you.

 

[Cafguy]

DJI support aren't drone flyers and aren't to be relied upon for technical information.

Really! Perhaps you could enlighten us on who we should receive our "technical" information from, If not those "complete idiots" at the company that MAKES them. Perhaps the engineering dept. over at DJI could use a hand. Please help us all by getting a job there!!
I attempted to halfway agree with your assessment but seems you cant even abide that. (and to think I took you off the ignore list for almost a week!
Simply use a computer to search problems with Drones over water maybe even check DJI's own forum even tho they know nothing.. even with all these I am sure you are right and no person has ever had the issue....LOL
You have simply come to hijack another post to tell us of your outstanding knowledge A knowledge even greater than DJI's apparently Yet a knowledge you must keep to yourself? You offer no help.
You believe you are here to judge or review suggestions and determine if they are right or wrong without knowing an answer. The online term is Troll.
Please do not clutter the members post with an answer to this. I have a PM for that.

 

[Meta4]

Really!

Yes, really

Perhaps you could enlighten us on who we should receive our "technical" information from, If not those "complete idiots" at the company that MAKES them. Perhaps the engineering dept. over at DJI could use a hand.

The company that designs and makes the great drones, doesn't have their best and brightest on their support lines.
They have low-paid individuals who don't know drones,and don't fly drones.
They work from pre-prepared scripts and if they don't have a script for your issue, what you get from them can be complete nonsense.

I attempted to halfway agree with your assessment but seems you cant even abide that.

That's right, I can't agree with it because it's just wrong.

Simply use a computer to search problems with Drones over water maybe even check DJI's own forum even tho they know nothing.

Great idea .. I could come up with the same misinformation you have tapped into.

 

[Droning on and on...]

Okay, @Meta4, you almost had me spitting out my coffee with "pre-prepared"... Think about it

 

[Meta4]

Yet a knowledge you must keep to yourself? You offer no help.

I offered help back in post #2.
Help that you wouldn't be able to give.

 

[MS Coast]

You offer no help.

Look back through the archives and note the flight log analyses that are provided here. He's a major contributor.

You believe you are here to judge or review suggestions and determine if they are right or wrong without knowing an answer. The online term is Troll.
Please do not clutter the members post with an answer to this. I have a PM for that.

Lighten up.

DJI drones do not go crazy over water.

DJI's technical support team members work with standard scripts and have little to no experience with drones. The frequent response to even simple inquiries is "send it in for evaluation."