Ive been flying a Phantom 3 Pro for nearly 2 years without any kind of accident, I decided to upgrade to the P4P a few weeks ago and yesterday it arrived.

I had work to do so decided to use the P4P and it went fantastic, the UAV performed beautifully. However, I went home and took it out to show it off to the family and while it was holding position hovering 17 meters up, it completely died and fell to the ground. It was only its third flight

No warning, not a sign of any issues. Just died and fell onto the concrete landing belly up.

I have lots of experience with operating these UAV's but ive never had a single problem until yesterday. I have emailed DJI's support and supplied the proof of purchase etc, but given the stories I hear about DJI I am a bit nervous over how they will be to deal with. Has anybody else had this happen??

If the logs confirm your story then I'm sure they will replace it without issue, and probably without explaining what the fault was.

Might be interesting if you uploaded your log to http://www.phantomhelp.com/LogViewer/upload/ and post a link so we can see what happened.

Check your voltage in the logs for all 4 Cells in the Battery, should to see a drop below 3.00v then i'm sure DJI will replace it without any problems.
But also, maybe a short- circuit or something similar happened. How was outside Temperature etc?

Ange1walk Posted at 2016-12-15 13:25
Check your voltage in the logs for all 4 Cells in the Battery, should to see a drop below 3.00v then i'm sure DJI will replace it without any problems.
But also, maybe a short- circuit or something similar happened. How was outside Temperature etc?

Temperature was fine, was all updated and calibrated.I have battery info shortcutted to the back of the controller and the voltages were all normal. I tried turn the UAV back on but there was a crackling inside and smoke started coming out so i turned it straight off. Interestingly, the battery took a beating but was still on after the impact with the ground.

Nigel_ Posted at 2016-12-15 13:13
If the logs confirm your story then I'm sure they will replace it without issue, and probably without explaining what the fault was.

Might be interesting if you uploaded your log to http://www.phantomhelp.com/LogViewer/upload/ and post a link so we can see what happened.

Can i recover the log without turning the P4P on??

DaceX80 Posted at 2016-12-15 13:33
Can i recover the log without turning the P4P on??

There should be some logs in your phone/tablet that you can upload to phantom help, which may tell us what the problem is.

The logs in the aircraft can't easily be accessed without powering the aircraft so that will have to be sent in to DJI for analysis and repair, or analysis and scrap!

Nigel_ Posted at 2016-12-15 13:47
There should be some logs in your phone/tablet that you can upload to phantom help, which may tell us what the problem is.

The logs in the aircraft can't easily be accessed without powering the aircraft so that will have to be sent in to DJI for analysis and repair, or analysis and scrap!

I exported the flightlog from the app (its on an ipad mini 2, not the most straightforward process), it only came out as a .csv so saved it as .txt for phantom help but its not working. What I can tell you is the flight record that the app is showing me confirms what i said. Unfortunately it cuts out at 37 seconds with the drone at 17 meters.

**UPDATE**

I managed to get the flightlog on to Phantom Help. All 4 cells were over 4v at the time the log stopped. Thanks to those who suggested looking at the flightlog on phantom help, its put my mind at ease that DJI will replace the UAV.

I don't see any indication of a fault in that, other than the log instantly stopping in mid air.  DJI may be able to decode more information out of it, and certainly the logs from the aircraft will either show more information or show that it didn't shut down properly.  I expect you will receive a replacement after sending it in for analysis without any difficulties.

Did it actually land upside down, or flip over after impact?   Normally they land the right way up so it was probably more than just loss of power that caused the problem.

Nigel_ Posted at 2016-12-15 15:28
I don't see any indication of a fault in that, other than the log instantly stopping in mid air.  DJI may be able to decode more information out of it, and certainly the logs from the aircraft will either show more information or show that it didn't shut down properly.  I expect you will receive a replacement after sending it in for analysis without any difficulties.

Did it actually land upside down, or flip over after impact?   Normally they land the right way up so it was probably more than just loss of power that caused the problem.

It lost all power instantly. Lights went off all at once and it dropped. As it fell it turned and landed near enough perfectly on its back. The camera detached but nothing else. The battery was knocked loose but it wasn't ejected and it was still powered on.

DaceX80 Posted at 2016-12-15 15:33
It lost all power instantly. Lights went off all at once and it dropped. As it fell it turned and landed near enough perfectly on its back. The camera detached but nothing else. The battery was knocked loose but it wasn't ejected and it was still powered on.

Would the battery have been loose, no power no connection?

Hope they sort it for you soon

Can you post link to the log here so others can review and understand??

Sorry to hear of the failure, not saying it was the case in your crash but the p4p's batteries need a two thumb good push home, they seem to be a snugger fit compared to any other phantoms

DaceX80, we feel so sorry to hear about that.
Since you've contacted our tech support with the information, we'll take care of you case, please do not worry about it.
Please feel free to let us know for any further questions.

digdat Posted at 2016-12-15 21:14
Can you post link to the log here so others can review and understand??

Sorry, I took it back down but here you go

http://www.phantomhelp.com/LogViewer/5JF52CNQ0V8U127HMRW9/#

hallmark007 Posted at 2016-12-15 20:14
Would the battery have been loose, no power no connection?

This was my first thought at the time, due to the battery still being on when she crashed, but its incredibly unlikely as I always remove the battery completely from the unit when its not in use (or in transit) so that I have to push the battery in to place for every flight. I am pretty obsessed and careful when it comes to batteries due to my fear of this exact thing happening, the battery was securely in. I did notice that the P4P arrived with the battery pushed in completely, which I thought was a bad idea on their part.