P4P Plus went down today...help analysising?

[ChipperRay]

Hey Guys,

Had my first P4P Plus crash today. Wasn't up very long or very far, went unstable and then just dropped. Upon viewing my cached footage I see what appears to be part of my rotor flying off before she tumbles downward...bird strike?

Anyway open for suggestions...

Brand new propellers. I'm starting to wonder if this particular propeller was bad?

 

[ChipperRay]

 

[ChipperRay]

Totalled the bird. Here is what is left...

 

[Newbieguy]

Fight records?

 

[ChipperRay]

Fight records?

Says "file too large"? How do I go about it?

 

[Meta4]

Says "file too large"? How do I go about it?

Go to DJI Flight Log Viewer
Follow the instructions there to upload your flight record from your phone or tablet.
Come back and post a link to the report it provides

 

[ChipperRay]

Ok Meta...hold on...do I need to hook up to DJI Assistant 2?

 

[sar104]

Ok Meta...hold on...do I need to hook up to DJI Assistant 2?

Actually if the aircraft will power up and connect to DJI Assistant then better still, get the DAT file for the flight.

How to retrieve a V3 .DAT File

 

[ChipperRay]

Ok, found it.

 

[ChipperRay]

Actually if the aircraft will power up and connect to DJI Assistant then better still, get the DAT file for the flight.

How to retrieve a V3 .DAT File

Hello Sar, yes I tried that before with Newbie and it tells me the file is too large to import under "upload a file"

 

[ChipperRay]

The only proof I have that the propeller came apart mid flight is my cached video...is there a way to get it uploaded here. I see you can send it to FB, Twitter, and other social media but I would rather just be able to download it to the desktop or upload it here somehow. The original micro sd footage is unreadable because it didn't have time to finalize before the bird hit the ground.

 

[sar104]

Hello Sar, yes I tried that before with Newbie and it tells me the file is too large to import under "upload a file"

Yes - you will have to post it via Dropbox or similar.

 

[Meta4]

Hello Sar, yes I tried that before with Newbie and it tells me the file is too large to import under "upload a file"

To share the .dat file you would have to upload it to dropbox or similar and post a link to where you uploaded it.

However the .txt file is enough to eliminate some things.
Here's what your data looks like: DJI Flight Log Viewer - PhantomHelp.com
It shows that you launched with a less than fully charged battery which can cause trouble.
But in this case it doesn't appear to be responsible.
At the time things started to go wrong, 2:29.1, the battery was reporting 14.47V which is well over the critical level of 3.3V.
The data also shows the Phantom spinning and tumbling under power as it fell.
This does not contradict the suggested cause of a broken prop.

If you could find the missing part of the prop, perhaps it might have some evidence to determine why it broke?

 

[UpLift Aerial]

I uploaded your flight log. Here it is:
Flight log 2017-10-15 [12-12-14]

 

[Meta4]

The only proof I have that the propeller came apart mid flight is my cached video...is there a way to get it uploaded here. I see you can send it to FB, Twitter, and other social media but I would rather just be able to download it to the desktop or upload it here somehow. The original micro sd footage is unreadable because it didn't have time to finalize before the bird hit the ground.

You should be able to finalise the video file by powering the Phantom on and off again with the SD card in.
The last couple of seconds may be lost though.
You can upload video to Youtube or similar and post a link here.

 

[UpLift Aerial]

Yes - you will have to post it via Dropbox or similar.

I use Google Drive. It's free.

 

[ChipperRay]

Try this....

Actually if the aircraft will power up and connect to DJI Assistant then better still, get the DAT file for the flight.

How to retrieve a V3 .DAT File

Here it is....nope, won't go again.

 

[UpLift Aerial]

Try this....

Here it is....nope, won't go again.

Try uploading it to Google Drive, then past that link here.

 

[sar104]

From the log file it appears that it was likely prop failure.

The aircraft is flying south in a crosswind of 15 - 20 mph from the west, hence the positive roll values. At 149 seconds it rolls left, pitches back and enters a tumbling fall at close to free fall acceleration. That suggests it lost the rear left prop.

 

[sar104]

The DAT file, which includes motor speed data, would be definitive here.