Mavic Pro 2 Motor Failure : crash and lost. What to do ?

[slup]

Columbia has sloth hunting harpy eagles that can even kill people. They grow big birds down there!

View attachment 91209

Oh my lord ...

That one can have one mini + one Air in the claws and one M2P in the beak!

 

[FoxhallGH]

Columbia has sloth hunting harpy eagles that can even kill people. They grow big birds down there!

View attachment 91209

Wow! - Now that's a Raptor! Incredible!!

 

[Tristan29photography]

Hi there,

Wow, I didn't really understand these formulas...

To help you confirm the analysis from @sar104 @BudWalker, @slup and others, here are 3 videos recorded from the app.

Perhaps, it could give another evidences that were not clear in the graphs.

1rst Impact :

On the first impact, what amazes me is that the drone is pushed forward and then having a circular trajectory... For me this is weird, and gives me some doubts again for the bird attack theory.

Or maybe the GPS made some jumps around but in reality the AC was staying at the same place...

@sar104 like you said the AC seems to be hit on the right front side when finishing the pano. But I am 100% that I didn't see any bird coming into the camera... So I am not sure again again of a bird attack... + the circular trajectory after impact.

I assume that a M2 would stabilize straight away and not behave like this for an impact...

And I don't think that a propeller would be torn either by a bird impact.

So guys, I would have a question : how would the M2 behave if a motor stopped turning abruptly ?? May it cause violent loops ?

2nd Impact :

On the second impact, we can see that the AC starts looping in straight line for almost 15 meters, and then a deviates on curve on the left side.

I think we all agree this revoke totally the possibility of a bird attack this time because it could not be strongly hit from behind at that speed.

So this "2nd impact" is due to a propeller or motor issue this time, and if it can cause a weird curving trajectory in the air, my guess is that it is very possible that it was the same issue the first time...


Overview of the 2 impacts

Last Video Recorded (cache images) 3 min before the first impact

As you can see in the video, at this moment there are no birds visibles on screen

Some pics :



KLM File to visualize it in 3D in Google Earth : KML File

 

[Tristan29photography]

Columbia has sloth hunting harpy eagles that can even kill people. They grow big birds down there!

View attachment 91209

Haha, Yes they have big guys in Colombia. 1rst country in the world for birds Biodiversity.

What I didn't say from the beginning is that I was filming from above some indigenous villages that I wanted to align with their sacred snowy peaks. These are Kogi indians, and they all have a Chaman called Mamo. In their mythology these Chaman have the power to transform in animals, including this kind of eagles.
So in the end, I think that it is the only possible cause of the attacks... ;-)

 

[syzygos7]

Im just speculating will it be the batterys VA flactuating?

 

[Tristan29photography]

Im just speculating will it be the batterys VA flactuating?

In the Log file (see first post), the Battery seems to be normal

 

[Tristan29photography]

Hi @sar104 sorry to bother you again ;-)

I just moved from the location today and arrived in Santa Marta at around 60-70 km. Here there is an incredible thermic wind at the moment , a kind of trade winds.

When I was on site, there were absolutely no wind at ground level, but maybe at 300 meters...

Is there a way to detect any sudden gust of wind in the graphs ?

 

[sar104]

Hi @sar104 sorry to bother you again ;-)

I just moved from the location today and arrived in Santa Marta at around 60-70 km. Here there is an incredible thermic wind at the moment , a kind of trade winds.

When I was on site, there were absolutely no wind at ground level, but maybe at 300 meters...

Is there a way to detect any sudden gust of wind in the graphs ?

It was definitely an impact of some kind - no wind gust is going to produce a sudden 6 g (60 m/s²) lateral acceleration. Wind gusts are characterized primarily in rapid changes in pitch and roll without stick input changes.

 

[Tristan29photography]

It was definitely an impact of some kind - no wind gust is going to produce a sudden 6 g (60 m/s²) lateral acceleration. Wind gusts are characterized primarily in rapid changes in pitch and roll without stick input changes.

Thanks a lot for the clarification ;-)

 

[Julmo01]

Hi there !

Sad day for me today. My Drone crashed after a short 6 month life, and I have no money to buy another one…

There were no wind, no obstacles, It had still enough batteries.

The Drone was flying normally, and after completing a 360 panorama, it suddenly falled of around 15 meters in the air, like if it was doing some kind of pirouettes and it miraculously stabilized.

Scared, I flew it directly to the home point, to get him back as soon as possible. And then all of a sudden, he fell again from the air at 270 meters of altitude and lost his signal

Surprisingly, the signal indicates that he lost connection at 191 meters high, while the ground rises to a 30 meters at that point. This is a jungle area on the north coast of Colombia.

I walked up the river for one hour, then I searched for it for two hours on the very uneven ground, in the very dense forest. Mosquitoes, spiders and ticks were very happy to find me there.

Despite the desperate search with Find My Drone function, nothing to do, it did not seem to be where the GPS had stopped.

I’d really like to know why he crashed… I guess the one motor stopped running

Is there any point in writing to DJI support? Is there anything to do?

In advance many thanks for your help

Here is the Log File if somebody would like to see how it crashed :

DJI Flight Log Viewer - PhantomHelp.com

Sorry to hear this...
In my opinion, looking the KML in 3D : I have the feeling that your M2 lost the signal to the remote controler due to the hill between you >> auto landing after 10s of no connexion... or maybe a bird strike, but I'm not convinced...
Looking at the impact point it doesn't seem to be in the river but clearly in the hill covered by deep forest...

 

[Tristan29photography]

Sorry to hear this...
In my opinion, looking the KML in 3D : I have the feeling that your M2 lost the signal to the remote controler due to the hill between you >> auto landing after 10s of no connexion... or maybe a bird strike, but I'm not convinced...
Looking at the impact point it doesn't seem to be in the river but clearly in the hill covered by deep forest...

That makes sens as well. In this case it would get stuck at the top of the tree.

Actually after the loss of signal there are 3 possibilities :
1. It auto landed after 10 secs
2. It continued it's falling trajectory straight forward
3. It kept looping with a random trajectory and fell into the water on the right or upper on the left hill

While we were on site with the guide, the jungle was so dense that it was pretty impossible search...

 

[sar104]

That makes sens as well. In this case it would get stuck at the top of the tree.

Actually after the loss of signal there are 3 possibilities :
1. It auto landed after 10 secs
2. It continued it's falling trajectory straight forward
3. It kept looping with a random trajectory and fell into the water on the right or upper on the left hill

While we were on site with the guide, the jungle was so dense that it was pretty impossible search...

That's not what happened. Propulsion failed and it will not have recovered from that. It crashed, as detailed above.

 

[Tristan29photography]

Hi Guys,
@slup @BudWalker @sar104

So here is below the "Ultimate" version of DJI specialists regarding the crash.

They finally found out THE truth about the crash. Lol

Let me know what do you think about it, and if you have any suggestions to answer them

Dear Tristan Quevilly,

Thanks for your patience.

This is Fancy from data analysis team, and I will be assisting you on this case from now on for related inquiries about data analysis.

For your case CAS-3936870-M6J6D9, we have finished the data analysis, and the result is as follows:

1. The aircraft was piloted under GPS mode, and responded to the pilot's control well;
2. Flight Time T=13:51, Related Height H=336.5 m, Distance to Home Point D=2740.3 m, the aircraft was switched to Pano mode;
3. Flight Time T=14:28, Related Height H=336.6 m, Distance to Home Point D=2740.3 m, the aircraft was too close to obstacles and it crashed when spinning clockwise; The incident coordinate: 11.2217405 -73.5779553,
4. T=15:27, h=272.5 m, d=2147 m, the aircraft was piloted under GPS mode, the pilot moved pitch stick forward fully and then crashed with obstacles again while flying forward;
5. Small and fine objects (e.g. tree branches and power lines) cannot be detected or sensed, please fly in open area.

According to the analysis, the incident was caused by the operation error by pilot.

We truly appreciate your support for DJI. If the aircraft couldn't be retrieved, we would like to offer you a 15% off coupon code for the mavic 2 pro (without the remote controller and battery charger), which can be used on DJI's online store:

Buy Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) - DJI Store

Shop for Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) on the official DJI Online Store. Find great deals and buy DJI products online with quick and convenient delivery!

store.dji.com

----------If the model is incorrect, please let us know.
----------We’re sorry to tell you that the discount cannot be applied to any other model other than the original one and it cannot be credited to your account.

Please email me if you would like the coupon code with the contents such as “I accept the offer”. And may I know if you would like to ship the aircraft to France when placing the order?

Should you have more questions, please reply to this email directly within 15 calendar days. Then we will contact you via email in 2-3 working days.

Reminder:
The response time will be delayed from Jan 20th to 30th due to the traditional Chinese Spring Festival. It is not suggested to keep sending emails to us as that will refresh the time on your case, while we will handle emails in time order later.

We are terribly sorry for the inconvenience caused and many thanks for your understanding!

Thanks for your support. Have a nice day.


Best Regards,

Fancy
DJI Technical Support

 

[BudWalker]

Hi Guys,
@slup @BudWalker @sar104

So here is below the "Ultimate" version of DJI specialists regarding the crash.

They finally found out THE truth about the crash. Lol

Let me know what do you think about it, and if you have any suggestions to answer them

Dear Tristan Quevilly,

Thanks for your patience.

This is Fancy from data analysis team, and I will be assisting you on this case from now on for related inquiries about data analysis.

For your case CAS-3936870-M6J6D9, we have finished the data analysis, and the result is as follows:

1. The aircraft was piloted under GPS mode, and responded to the pilot's control well;
2. Flight Time T=13:51, Related Height H=336.5 m, Distance to Home Point D=2740.3 m, the aircraft was switched to Pano mode;
3. Flight Time T=14:28, Related Height H=336.6 m, Distance to Home Point D=2740.3 m, the aircraft was too close to obstacles and it crashed when spinning clockwise; The incident coordinate: 11.2217405 -73.5779553,
4. T=15:27, h=272.5 m, d=2147 m, the aircraft was piloted under GPS mode, the pilot moved pitch stick forward fully and then crashed with obstacles again while flying forward;
5. Small and fine objects (e.g. tree branches and power lines) cannot be detected or sensed, please fly in open area.

According to the analysis, the incident was caused by the operation error by pilot.

We truly appreciate your support for DJI. If the aircraft couldn't be retrieved, we would like to offer you a 15% off coupon code for the mavic 2 pro (without the remote controller and battery charger), which can be used on DJI's online store:

Buy Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) - DJI Store

Shop for Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) on the official DJI Online Store. Find great deals and buy DJI products online with quick and convenient delivery!

store.dji.com

----------If the model is incorrect, please let us know.
----------We’re sorry to tell you that the discount cannot be applied to any other model other than the original one and it cannot be credited to your account.

Please email me if you would like the coupon code with the contents such as “I accept the offer”. And may I know if you would like to ship the aircraft to France when placing the order?

Should you have more questions, please reply to this email directly within 15 calendar days. Then we will contact you via email in 2-3 working days.

Reminder:
The response time will be delayed from Jan 20th to 30th due to the traditional Chinese Spring Festival. It is not suggested to keep sending emails to us as that will refresh the time on your case, while we will handle emails in time order later.

We are terribly sorry for the inconvenience caused and many thanks for your understanding!

Thanks for your support. Have a nice day.


Best Regards,

Fancy
DJI Technical Support

Of course their analysis is nonsense. But what is the point? The most you could possibly hope for is to convince DJI that the M2 had a midair collision.

 

[Tristan29photography]

Of course their analysis is nonsense. But what is the point? The most you could possibly hope for is to convince DJI that the M2 had a midair collision.

Haha, I would not have imagine this from their side against all evidences...
But of course their role is to avoid distributing discounts all around

 

[sar104]

Hi Guys,
@slup @BudWalker @sar104

So here is below the "Ultimate" version of DJI specialists regarding the crash.

They finally found out THE truth about the crash. Lol

Let me know what do you think about it, and if you have any suggestions to answer them

Dear Tristan Quevilly,

Thanks for your patience.

This is Fancy from data analysis team, and I will be assisting you on this case from now on for related inquiries about data analysis.

For your case CAS-3936870-M6J6D9, we have finished the data analysis, and the result is as follows:

1. The aircraft was piloted under GPS mode, and responded to the pilot's control well;
2. Flight Time T=13:51, Related Height H=336.5 m, Distance to Home Point D=2740.3 m, the aircraft was switched to Pano mode;
3. Flight Time T=14:28, Related Height H=336.6 m, Distance to Home Point D=2740.3 m, the aircraft was too close to obstacles and it crashed when spinning clockwise; The incident coordinate: 11.2217405 -73.5779553,
4. T=15:27, h=272.5 m, d=2147 m, the aircraft was piloted under GPS mode, the pilot moved pitch stick forward fully and then crashed with obstacles again while flying forward;
5. Small and fine objects (e.g. tree branches and power lines) cannot be detected or sensed, please fly in open area.

According to the analysis, the incident was caused by the operation error by pilot.

We truly appreciate your support for DJI. If the aircraft couldn't be retrieved, we would like to offer you a 15% off coupon code for the mavic 2 pro (without the remote controller and battery charger), which can be used on DJI's online store:

Buy Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) - DJI Store

Shop for Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) on the official DJI Online Store. Find great deals and buy DJI products online with quick and convenient delivery!

store.dji.com

----------If the model is incorrect, please let us know.
----------We’re sorry to tell you that the discount cannot be applied to any other model other than the original one and it cannot be credited to your account.

Please email me if you would like the coupon code with the contents such as “I accept the offer”. And may I know if you would like to ship the aircraft to France when placing the order?

Should you have more questions, please reply to this email directly within 15 calendar days. Then we will contact you via email in 2-3 working days.

Reminder:
The response time will be delayed from Jan 20th to 30th due to the traditional Chinese Spring Festival. It is not suggested to keep sending emails to us as that will refresh the time on your case, while we will handle emails in time order later.

We are terribly sorry for the inconvenience caused and many thanks for your understanding!

Thanks for your support. Have a nice day.


Best Regards,

Fancy
DJI Technical Support

You can point out to them that collision with an obstacle was not a possible explanation when the aircraft was 180 meters (~600 ft) above ground level. However, as @BudWalker points out, it doesn't change anything since a midair collision is still not a product fault.

 

[Tristan29photography]

You can point out to them that collision with an obstacle was not a possible explanation when the aircraft was 180 meters (~600 ft) above ground level. However, as @BudWalker points out, it doesn't change anything since a midair collision is still not a product fault.

Yes you are both right.

I may try to play on the fact that they talk about Ufo collision, despite I know it will be useless to do so ;-)

 

[slup]

Hi Guys,
@slup @BudWalker @sar104

So here is below the "Ultimate" version of DJI specialists regarding the crash.

They finally found out THE truth about the crash. Lol

Let me know what do you think about it, and if you have any suggestions to answer them

Dear Tristan Quevilly,

Thanks for your patience.

This is Fancy from data analysis team, and I will be assisting you on this case from now on for related inquiries about data analysis.

For your case CAS-3936870-M6J6D9, we have finished the data analysis, and the result is as follows:

1. The aircraft was piloted under GPS mode, and responded to the pilot's control well;
2. Flight Time T=13:51, Related Height H=336.5 m, Distance to Home Point D=2740.3 m, the aircraft was switched to Pano mode;
3. Flight Time T=14:28, Related Height H=336.6 m, Distance to Home Point D=2740.3 m, the aircraft was too close to obstacles and it crashed when spinning clockwise; The incident coordinate: 11.2217405 -73.5779553,
4. T=15:27, h=272.5 m, d=2147 m, the aircraft was piloted under GPS mode, the pilot moved pitch stick forward fully and then crashed with obstacles again while flying forward;
5. Small and fine objects (e.g. tree branches and power lines) cannot be detected or sensed, please fly in open area.

According to the analysis, the incident was caused by the operation error by pilot.

We truly appreciate your support for DJI. If the aircraft couldn't be retrieved, we would like to offer you a 15% off coupon code for the mavic 2 pro (without the remote controller and battery charger), which can be used on DJI's online store:

Buy Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) - DJI Store

Shop for Mavic 2 Pro Aircraft (Excludes Remote Controller and Battery Charger) on the official DJI Online Store. Find great deals and buy DJI products online with quick and convenient delivery!

store.dji.com

----------If the model is incorrect, please let us know.
----------We’re sorry to tell you that the discount cannot be applied to any other model other than the original one and it cannot be credited to your account.

Please email me if you would like the coupon code with the contents such as “I accept the offer”. And may I know if you would like to ship the aircraft to France when placing the order?

Should you have more questions, please reply to this email directly within 15 calendar days. Then we will contact you via email in 2-3 working days.

Reminder:
The response time will be delayed from Jan 20th to 30th due to the traditional Chinese Spring Festival. It is not suggested to keep sending emails to us as that will refresh the time on your case, while we will handle emails in time order later.

We are terribly sorry for the inconvenience caused and many thanks for your understanding!

Thanks for your support. Have a nice day.


Best Regards,

Fancy
DJI Technical Support

Yeah... pretty much what I would expect with this event analysis made. Nothing start up this event followed by the later death of your M2P that points to a HW or SW fault. I'm pretty sure that DJI came to that conclusion rather quickly... then no need for them to dig deeper.

 

[maven4336]

Sorry to here this,had mine since release date,thousands of hours and good to go,I will say I do not fly in sport mode, well good luck just don’t get a mini, cheap toy, take care

 

[Thomas B]

Yes you are both right.

I may try to play on the fact that they talk about Ufo collision, despite I know it will be useless to do so ;-)

But push for 30% discount on a new one. DJI often offers that much.