Mavic air 2 falls to the Ocean!

[ChrisPL]

You had the Mini hovering low above the water and applied up-throttle at 5:42.9.
The data shows that the drone did begin to rise and climbed 0.4 metres before the data suggests that the drone hit the water at 5:43.2.
One explanation for this might be the drone being caught by a wave?

But there is a problem with your flight data - the Verbose CSV file is empty so the data from the downward sensors isn't available so I cannot confirm this.

How close to the water was the drone hovering?
Was the sea flat calm or was there wave action?
How high were the waves?

Yes finally it was probably caught by a wave, I suppose they were max 1ft high. As I wrote I decreased alt from ~9 meters to hover on 3 meters and from now on I didn't touch the throttle. Altimeter was still showing ~3 meters but in the real the drone constantly decerased the altitude until hit the water. Last few seconds txt data shows stable ~ 3 meters but in dat/csv I see slow alt decrease on all signals.
No idea why there is no data in your file but I've opened dat as well as datcon converted csv in CsvView and all data was there.
Uploading zipped csv:

 

[JohnLietzke]

I do not have much experience interpreting logs and hopefully someone that does will chime in.

My initial thoughts are that it was some type of battery issue or pilot error. There is a correlation between the height decrease and BatteryInfo:emergency_landing_cap. Given my lack of experience with logs I am not the best diagnosing the problem.

It appears to me that either an emergency landing/forced land was initiated but I do not know if it was caused by the aircraft or via the remote.

 

[Meta4]

My initial thoughts are that it was some type of battery issue or pilot error.
It appears to me that either an emergency landing/forced land was initiated but I do not know if it was caused by the aircraft or via the remote.

The battery had plenty of juice and was not a factor in the loss of the drone.
There was no emergency landing ... the drone was ascending when it was lost.

 

[JohnLietzke]

The battery had plenty of juice and was not a factor in the loss of the drone.
There was no emergency landing ... the drone was ascending when it was lost.

Definitely listen to Meta4. He is the guru logs.

 

[ChrisPL]

Dears, Thank You for your inputs. I'd like to point Your attention to last cricital secs. I put 2charts . First is from txt - You'll see the throttle down - drone descends, then throttle in neutral but it not hover and autonomously continues descending that shows ultrasonic but not OSD general height. Similar view on second chart generated from dat>csv. Almost all hight signals except one show autonomous descending. Additionaly the pink highlited area reflect time that IMMU Calc Error was true. What do you think? What is the cause of this autonomous descending from 3m to the water level?

 

[Doug3601]

Sickening! And with Salt Water, even if you found it, other than to understand if the battery disconnected, its toast. For the record, a couple of years ago, my Mavic Pro went swimming in a pond! Fat Thumbs, purely my fault, I was sick, night was approaching and I had to leave the following morning for a few days. I even have it on video, but I'm not going to post it, I'm not proud. That morning I fished it out, stuck it in a big ziplock with three bags of rice, placed it in my climate controlled gun safe. When I returned the next week, I installed a new battery, the one that went swimming was toast, everything operated normally and I'm still flying it today. Fresh Pond Water, you might stand a chance, salt water very doubtful Sorry for your loss buddy!.