Mavic Pro Platinum fell into the ocean, drone recovered.

[Mavic Pro Platinum]

Today my brother was flying his Mavic Pro Platinum over the ocean. He had flown out several hundred feet from the shore to get some shots of a paddle boarder and kayaker. He got his shots and flew away from them parallel to the shore. We were talking and he looked away from his screen to look at me while descending. Being distracted by our conversation he continued to descend and his phone said “landing”. His phone said aircraft disconnected after it said landing but his remote controller was still connected. He immediately pushed the left stick up to gain altitude. We saw his drone ascending and after the drone had gone up around 40 feet or so the drone just lost power and fell into the ocean. We immediately ran to the water and started looking. We couldn’t find it so I ran and got my M2P and after looking from above for awhile I spotted it and we retrieved it. We rinsed it out really good with distilled water, disassembled it and cleaned it with alcohol and distilled water. The drone is currently drying and after it’s done we’ll reassemble it. My question is what caused the drone to fall out of the sky like that. The battery didn’t fall out and no props came off. I’ll post the flight records for @sar104 to analyze. Thank you and [emoji1417][emoji16]

 

[Mavic Pro Platinum]

Today my brother was flying his Mavic Pro Platinum over the ocean. He had flown out several hundred feet from the shore to get some shots of a paddle boarder and kayaker. He got his shots and flew away from them parallel to the shore. We were talking and he looked away from his screen to look at me while descending. Being distracted by our conversation he continued to descend and his phone said “landing”. His phone said aircraft disconnected after it said landing but his remote controller was still connected. He immediately pushed the right stick up to gain altitude. We saw his drone ascending and after the drone had gone up around 40 feet or so the drone just lost power and fell into the ocean. We immediately ran to the water and started looking. We couldn’t find it so I ran and got my M2P and after looking from above for awhile I spotted it and we retrieved it. We rinsed it out really good with distilled water, disassembled it and cleaned it with alcohol and distilled water. The drone is currently drying and after it’s done we’ll reassemble it. My question is what caused the drone to fall out of the sky like that. The battery didn’t fall out and no props came off. I’ll post the flight records for @sar104 to analyze. Thank you and [emoji1417][emoji16]

How do we retrieve the flight record from my brothers phone? It’s been a while lol. Once we reassemble the drone we’ll recover the flight record from the drone itself to see exactly what happened. [emoji1417][emoji16]

 

[sar104]

There are instructions and links here:

Mavic Flight Log Retrieval and Analysis Guide

With the introduction of the Mavic Mini there has been a noticeable uptick in the number of posts requesting help with lost or crashed aircraft. While there is plenty of help and advice available on this forum, and detailed guidance and options on several other websites, I thought that perhaps a...

mavicpilots.com

 

[Meta4]

My question is what caused the drone to fall out of the sky like that. The battery didn’t fall out and no props came off.

The data will be necessary to know what happened.
How far from the water was the drone when he pushed the left stick to climb to 40 ft?

How do we retrieve the flight record from my brothers phone? It’s been a while lol. Once we reassemble the drone we’ll recover the flight record from the drone itself to see exactly what happened.

The record from the phone will probably be all that's needed to see what happened.
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 of the flight.
Come back and post a link to the report it gives you.

We rinsed it out really good with distilled water, disassembled it and cleaned it with alcohol and distilled water. The drone is currently drying and after it’s done we’ll reassemble it.

Unfortunately it's probably a wasted effort, seawater kills electronics.

 

[Mavic Pro Platinum]

The data will be necessary to know what happened.
How far from the water was the drone when he pushed the left stick to climb to 40 ft?

The record from the phone will probably be all that's needed to see what happened.
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 of the flight.
Come back and post a link to the report it gives you.


Unfortunately it's probably a wasted effort, seawater kills electronics.

Thank you. He was approximately 300 feet from the shore over the ocean. [emoji1417][emoji16]

 

[Detritalgeo]

If you still see crud, try a rinse of the pcb's with an 80-20 alcohol and de-ionized water mix. That way there should be very little dissolved solids (like sodium, Calcium or magnesium) remaining.

 

[Mavic Pro Platinum]

This should be it. The records should be today at around 12:30 PM, let me know if they aren’t. Thank you!

 

[Meta4]

Thank you. He was approximately 300 feet from the shore over the ocean. [emoji1417][emoji16]

I was wondering how far down the drone got.
Did it touch the water?

 

[Mavic Pro Platinum]

I was wondering how far down the drone got.
Did it touch the water?

It crashed into 6 feet or so of water and was in for 45 minutes or so. [emoji1417][emoji16]

 

[Meta4]

It crashed into 6 feet or so of water and was in for 45 minutes or so. [emoji1417][emoji16]

You said that the drone descended and the pilot took it up quickly.
How close to the water did the drone get before the flyer took it up?
Did it touch the water?

The flight data looks like this:

DJI Flight Log Viewer | Phantom Help

Upload and view flight logs from your DJI drones

www.phantomhelp.com

I'm having trouble matching the flight data to the incident description.
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

This doesn't match the description of climbing to 40 ft and falling.
There's also no warning about Landing in the data.

 

[Mavic Pro Platinum]

You said that the drone descended and the pilot took it up quickly.
How close to the water did the drone get before the flyer took it up?
Did it touch the water?

The flight data looks like this:

DJI Flight Log Viewer | Phantom Help

Upload and view flight logs from your DJI drones

www.phantomhelp.com

I'm having trouble matching the flight data to the incident description.
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

This doesn't match the description of climbing to 40 ft and falling.
There's also no warning about Landing in the data.

Correct. DJI GO 4 said “aircraft disconnected” somewhere near the time it said “landing”. When we reassemble the drone we’ll get the flight records off it. Are you able to read flight records from the AC? Thank you! [emoji1417][emoji16]

 

[Mavic Pro Platinum]

You said that the drone descended and the pilot took it up quickly.
How close to the water did the drone get before the flyer took it up?
Did it touch the water?

The flight data looks like this:

DJI Flight Log Viewer | Phantom Help

Upload and view flight logs from your DJI drones

www.phantomhelp.com

I'm having trouble matching the flight data to the incident description.
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

This doesn't match the description of climbing to 40 ft and falling.
There's also no warning about Landing in the data.

Here’s some close ups of the drones electronics. [emoji1417][emoji16]

 

[Meta4]

Correct. DJI GO 4 said “aircraft disconnected” somewhere near the time it said “landing”. When we reassemble the drone we’ll get the flight records off it. Are you able to read flight records from the AC? Thank you! [emoji1417][emoji16]

I'm still trying to understand the description of the incident.

I asked this Q 3 times because it's important:
You said that the drone descended and the pilot took it up quickly.
How close to the water did the drone get before the flyer took it up?
Did it touch the water?

I'm having trouble matching the flight data to the incident description.
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

This doesn't match the description of climbing to 40 ft and falling.
I can't match what the data shows to what you have described.
I can't find a time when the drone was descending and then climbed to 40 ft and shortly, dropped to the water.

Someone else might look at the .dat file for you

 

[Mavic Pro Platinum]

I'm still trying to understand the description of the incident.

I asked this Q 3 times because it's important:
You said that the drone descended and the pilot took it up quickly.
How close to the water did the drone get before the flyer took it up?
Did it touch the water?

I'm having trouble matching the flight data to the incident description.
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

This doesn't match the description of climbing to 40 ft and falling.
I can't match what the data shows to what you have described.
I can't find a time when the drone was descending and then climbed to 40 ft and shortly, dropped to the water.

Someone else might look at the .dat file for you

Tbh, I have no idea if it touched the water or not. I wasn’t looking at the drone or the screen when it said “landing”. My brother said he’s pretty sure it didn’t touch the water. If it did touch the water that could have been the reason that it fell right? [emoji1417][emoji16]

 

[Meta4]

Tbh, I have no idea if it touched the water or not. I wasn’t looking at the drone or the screen when it said “landing”. My brother said he’s pretty sure it didn’t touch the water. If it did touch the water that could have been the reason that it fell right? [emoji1417][emoji16]

Did it get close to the water?
I'm trying to find the point in the flight data where this happened.
I have 15 minutes of data (a spreadsheet with 6300 rows of numbers) and nothing so far that matches your story.

 

[Mavic Pro Platinum]

I'm still trying to understand the description of the incident.

I asked this Q 3 times because it's important:
You said that the drone descended and the pilot took it up quickly.
How close to the water did the drone get before the flyer took it up?
Did it touch the water?

I'm having trouble matching the flight data to the incident description.
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

This doesn't match the description of climbing to 40 ft and falling.
I can't match what the data shows to what you have described.
I can't find a time when the drone was descending and then climbed to 40 ft and shortly, dropped to the water.

Someone else might look at the .dat file for you

When the drone fell, it still had power, but it was like the drone csc’d and was trying to level out. Maybe it did touch the water and it took a few seconds for it to go haywire. The motors definitely were spinning when it fell. Hopefully this makes sense. [emoji1417][emoji16]

 

[Meta4]

When the drone fell, it still had power, but it was like the drone csc’d and was trying to level out. Maybe it did touch the water and it took a few seconds for it to go haywire. The motors definitely were spinning when it fell. Hopefully this makes sense. [emoji1417][emoji16]

Here's what I can see for teh last five minutes of the flight:
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

Does that match any of your memory of the flight?
How for before the dunking was the drone up 130 feet?
Was there a time in the incident when the drone was hovering at low level for 30 seconds ? (that's when the flight data ends).

 

[Mavic Pro Platinum]

Did it get close to the water?
I'm trying to find the point in the flight data where this happened.
I have 15 minutes of data (a spreadsheet with 6300 rows of numbers) and nothing so far that matches your story.

It definitely did get close to the water. He took off from the yard in front of the condo that we’re staying at which is 15 feet or so above sea level. The drone was at -11 feet when it said landing. So it was probably 1-3 feet above the water. [emoji1417][emoji16]

 

[Mavic Pro Platinum]

Here's what I can see for teh last five minutes of the flight:
The last time the pilot pulled the left stick back to climb was at 7:10.7 when the drone climbed to 130 ft.
For the rest of the flight (5 more minutes) the drone was descending or flying level.
The pilot pulled down on the left stick from 11:48.2 till 11:51.6 and again from 11:52.6 to 11:54.3.
It was this joystick movement that brought the drone down to low level and it was left hovering there until 12:15.6 when the data ends.

Does that match any of your memory of the flight?
How for before the dunking was the drone up 130 feet?
Was there a time in the incident when the drone was hovering at low level for 30 seconds ? (that's when the flight data ends).

No, the drone did not hover for 30 seconds. He had the stick down until it said “landing” then he pushed the stick up. It was a minute or two from 130 feet to the dunking. Thank you! [emoji1417][emoji16]

 

[new2mavic]

Are you sure you have uploaded the correct .TXT and .DAT files ? The time indication in the file name is different although the date is the same ( Jan 6th ). The flight paths in the two files are different as well but in both cases, the log stopped when the drone was over the water.

Flight path in the .TXT file :


Flight path in the .DAT file :