Hello,

While using my Air 2s with a Weak GPS Signal, the backward sensors did not send any warnings and the drone hit an obstacle.

Is this an excpected behavior or a malfunctioning of the sensors ?

Here is the video of the crash and the logs

https://www.youtube.com/watch?v=X22Gi0NrcKE

https://github.com/slebrun83/dji/raw/main/DJIFlightRecord_2024-03-03_%5B14-16-41%5D.txt

Thanks for your help

You can see a summary of your flight data here.
https://www.phantomhelp.com/logviewer/4BPDBTJ6AB4AAJ3XV8SO/

You descended far down a high cliff, staying close to the cliff.
As you went beyond -11 metres, the number of satellites began to fall, because the cliff wall was blocking much of the sky and the sats in that part of the sky.
As you reached -24 metres, you lost full GPS, because you had lost too many sats.
Without GPS, the drone is controllable, but it has lost the ability to hold horizontal position.

You continued to descend and as you reached -280 metres the drone  collided with an obstacle and started tumbling.

Is this an excpected behavior or a malfunctioning of the sensors ?
The reason that Obstacle Avoidance failed to prevent the colllision is that Obstacle Avoidance needs GPS to be able to work.
WIthout GPS, there is no Obstacle Avoidance.

Labroides Posted at 3-11 07:10
You can see a summary of your flight data here.
https://www.phantomhelp.com/logviewer/4BPDBTJ6AB4AAJ3XV8SO/

The reason that Obstacle Avoidance failed to prevent the colllision is that Obstacle Avoidance needs GPS to be able to work.
WIthout GPS, there is no Obstacle Avoidance.

That sounds like really bad design. Is there anywhere that DJI has documented that that is the case?

Hi, houston83. Thank you for reaching out and we're sorry to read about what happened. Since the drone crashed, we highly recommend that you send your drone back to us for further diagnosis and repair. You may also request a data analysis to check on what happened (a fee might be applied). You may submit an online repair request through this link: {https://repair.dji.com/repair/index}. If you need assistance with creating a ticket, you may contact DJI support at (https://www.dji.com/support). Please note that the warranty service can be claimed depending on the result of the Damage assessment.  Data analysis can also be requested to check what caused the issue (a fee might be applied depending on the warranty). Thank you for your kind understanding and continued support.

DJI Gamora Posted at 3-12 01:14
Hi, houston83. Thank you for reaching out and we're sorry to read about what happened. Since the drone crashed, we highly recommend that you send your drone back to us for further diagnosis and repair. You may also request a data analysis to check on what happened (a fee might be applied). You may submit an online repair request through this link: {https://repair.dji.com/repair/index}. If you need assistance with creating a ticket, you may contact DJI support at (https://www.dji.com/support). Please note that the warranty service can be claimed depending on the result of the Damage assessment.  Data analysis can also be requested to check what caused the issue (a fee might be applied depending on the warranty). Thank you for your kind understanding and continued support.

we highly recommend that you send your drone back to us for further diagnosis and repair
Given that the drone ended up more than 1000 feet down the cliff, I suspect that might happen.

Labroides Posted at 3-11 07:10
You can see a summary of your flight data here.
https://www.phantomhelp.com/logviewer/4BPDBTJ6AB4AAJ3XV8SO/

Thank you ! That was the best explanation I got so far !!

DJI Gamora Posted at 3-12 01:14
Hi, houston83. Thank you for reaching out and we're sorry to read about what happened. Since the drone crashed, we highly recommend that you send your drone back to us for further diagnosis and repair. You may also request a data analysis to check on what happened (a fee might be applied). You may submit an online repair request through this link: {https://repair.dji.com/repair/index}. If you need assistance with creating a ticket, you may contact DJI support at (https://www.dji.com/support). Please note that the warranty service can be claimed depending on the result of the Damage assessment.  Data analysis can also be requested to check what caused the issue (a fee might be applied depending on the warranty). Thank you for your kind understanding and continued support.

Thank you, unfortunately the drone is lost in a location very hard to reach, I could not get there

I am in contact with DJI Support about the next steps

If there is anything good that came from this.  I thought the video was great until the crash.  I am sorry that your drone.  How bad is the damage?

Shawgod Posted at 3-13 11:25
If there is anything good that came from this.  I thought the video was great until the crash.  I am sorry that your drone.  How bad is the damage?

Thanks ! Unfortunately the drone is lost in the jungle and the connection is lost

Labroides Posted at 3-12 03:13
we highly recommend that you send your drone back to us for further diagnosis and repair
Given that the drone ended up more than 1000 feet down the cliff, I suspect that might happen.

Thank you for the comment, Labroides. You are correct, if they have retrieved the drone that's the only time they can send it in. Have a nice day!

houston83 Posted at 3-12 14:45
Thank you, unfortunately the drone is lost in a location very hard to reach, I could not get there

I am in contact with DJI Support about the next steps

We're so sorry to read about this, houston83. Since you were not able to retrieve the drone, we suggest reporting a flyaway case via Flyaway Service. After successful registration, a DJI customer service agent will contact you and communicate with the service solution. If ever your drone has been found but is malfunctioning and requires repair, you can submit a repair application via Online Repair Request. Data analysis can also be requested to check what caused the issue (a fee might be applied depending on the warranty). If you need assistance creating a ticket, contact DJI support at (https://www.dji.com/support). Thank you for your continued support.

DJI Gamora Posted at 3-13 23:48
We're so sorry to read about this, houston83. Since you were not able to retrieve the drone, we suggest reporting a flyaway case via Flyaway Service. After successful registration, a DJI customer service agent will contact you and communicate with the service solution. If ever your drone has been found but is malfunctioning and requires repair, you can submit a repair application via Online Repair Request. Data analysis can also be requested to check what caused the issue (a fee might be applied depending on the warranty). If you need assistance creating a ticket, contact DJI support at (https://www.dji.com/support). Thank you for your continued support.

It's done, thanks !

houston83 Posted at 3-14 14:28
It's done, thanks !

You're most welcome. Should you need further assistance, please let us know.