Tell me what you think happened.

http://app.airdata.com/main?share=MfWKrw

Need more than flight data to check.  Why don't you post your flight log?

ALABAMA Posted at 2017-8-17 08:24
Need more than flight data to check.  Why don't you post your flight log?

How do I post the log and where would it be?

ALABAMA Posted at 2017-8-17 08:24
Need more than flight data to check.  Why don't you post your flight log?

Do you see the flight ending at 390ft elevation and last known location 390ft up, no decent no landing no nothing.

Upload your flight log to http://phantomhelp.com/logviewer/Upload/ and post the link. Airdata isn't very useful for analysis.

I would recommend you to contact our Support Team and report the accident: http://www.dji.com/support

DJI Susan Posted at 2017-8-17 18:31
I would recommend you to contact our Support Team and report the accident: http://www.dji.com/support

I did that.  It took 3 weeks for them to tell me my 14 minute old drone was not faulty and they will not do anything.  You can clearly see the flight ends at 390ft in the air.  The drone never returned home or showed a decent or land.  It did this after a black screen on my p4+ monitor.  Drone was never found.

fans5f01fa88 Posted at 2017-8-18 04:46
I did that.  It took 3 weeks for them to tell me my 14 minute old drone was not faulty and they will not do anything.  You can clearly see the flight ends at 390ft in the air.  The drone never returned home or showed a decent or land.  It did this after a black screen on my p4+ monitor.  Drone was never found.

Did you do all of the latest updates?

Looks like you ran out of power and it auto landed, probably still sitting there waiting for you to collect it...

You would get better assistance if you uploaded the log to phantomhelp as requested above, much easier for us to see what happened.

Assuming critical landing was set for 10% battery, it should have flown in a straight line back towards home for about 1.5 minutes after you lost contact before auto landing, have you checked the location 1.5 minutes back towards home at RTH speed?

Since the battery is showing zero charges, presumably you had given it one half charge and had not run it in at all?

Judging by the temperature rise of the battery towards the end of the log, the battery was just about empty at that point and may have made an immediate landing soon after rather than returning home for 1.5 minutes.

The batteries need a bit of running in and a few full charges to get the % full figure accurate, I think it was a bit out, but you didn't have enough left to make it home anyway, you turned around at 46% left so only had 36% left before the 10% critical landing would have been reached.  You used 54% to get there, 36% to get back would be difficult and I think Airdata is saying that you had a 6mph headwind on the way back. (unless that is a tail wind?)

For a first flight, that was too ambitious!

Nigel_ Posted at 2017-8-18 06:16
Since the battery is showing zero charges, presumably you had given it one half charge and had not run it in at all?

Judging by the temperature rise of the battery towards the end of the log, the battery was just about empty at that point and may have made an immediate landing soon after rather than returning home for 1.5 minutes.

Wouldnt a auto land show it decending and last known location at 0ft?  It ended at 390ft up!  No the drone was not in the area it was last known.  It is a field and we searched it.  

Rodger8 Posted at 2017-8-18 05:18
Did you do all of the latest updates?

I ordered it right from DJI it was brand new shipped from them. If there is known issues that updates addressed than DJI knew about the issue.

Nigel_ Posted at 2017-8-18 05:34
Looks like you ran out of power and it auto landed, probably still sitting there waiting for you to collect it...

You would get better assistance if you uploaded the log to phantomhelp as requested above, much easier for us to see what happened.

Cant seem to upload it from phone.

Nigel_ Posted at 2017-8-18 05:40
Assuming critical landing was set for 10% battery, it should have flown in a straight line back towards home for about 1.5 minutes after you lost contact before auto landing, have you checked the location 1.5 minutes back towards home at RTH speed?

Auto land would show on the record as decending and landing.  Not last known location at 390ft up.

Nigel_ Posted at 2017-8-18 06:16
Since the battery is showing zero charges, presumably you had given it one half charge and had not run it in at all?

Judging by the temperature rise of the battery towards the end of the log, the battery was just about empty at that point and may have made an immediate landing soon after rather than returning home for 1.5 minutes.

Battery was around 70% when I took off. It ended with 19% still left.

microlinux Posted at 2017-8-17 09:33
Upload your flight log to http://phantomhelp.com/logviewer/Upload/ and post the link. Airdata isn't very useful for analysis.

Here is flight log.

Http://www.phantomhelp.com/logviewer/TIRFPBZ0OTK4O1JR9Q8J/

Flight Log

You were 2 miles away from White Sands Missile Range.
Maybe they have equipment installed to deactivate drones...

Eric13 Posted at 2017-8-18 10:57
You were 2 miles away from White Sands Missile Range.
Maybe they have equipment installed to deactivate drones...

No, I am way off the range not in any restricted area.  I live here and we fly all the time here.

fans5f01fa88 Posted at 2017-8-18 09:59
Auto land would show on the record as decending and landing.  Not last known location at 390ft up.

Auto land would show if you had communication at the time, but 6000 ft away you had poor reception, lots of drop outs shown in the log, then you lost communication completely.  It should then have set off home due to the lost communication and would have travelled some distance in a straight line back to the home point.  We know it probably did set off home since you didn't find it at that location, the question is how far it got, it definitely didn't have enough battery left to make it all the way back.

Battery temperature in that log looks OK, don't understand why the other thing shows it rise at the end.  I think the voltages are a bit low for the % given but there was some left.

Can you get someone to fly a drone in a straight line from the point you lost communication back to the home point to search for it, should be somewhere along the way, I guess not far along.

I would estimate that it attempted to autoland, you were at 390ft AGL and with a 6MPH wind it most likely drifted in that direction, if it faulted to ATTI then that 6mph wind could push it out further than you had anticipated while it descended. It's definitely in the area. I would suggest having someone fly their UAV in the last known location or widen your search radius. Hopefully it's still intact just waiting for you to pick it up.

We will search some more but I was right off the highway so I am sure someone saw it and took it.  It was a tail wind and 19% would have got it home easily.  Something went kookoo.

Loss of signal = RTH
Low power = Autoland

Neither of which happened on the record

Will search some more.  Was right off highway so we are sure someone saw it and took it.  Something went kookoo!!!

SRF44 Posted at 2017-8-18 12:00
I would estimate that it attempted to autoland, you were at 390ft AGL and with a 6MPH wind it most likely drifted in that direction, if it faulted to ATTI then that 6mph wind could push it out further than you had anticipated while it descended. It's definitely in the area. I would suggest having someone fly their UAV in the last known location or widen your search radius. Hopefully it's still intact just waiting for you to pick it up.

No reason to think it went into Atti, it had lots of GPS satellites.

However it may have been stolen by an eagle: "RTH: Backing up to avoid obstacle" @ 390ft

fans5f01fa88 Posted at 2017-8-18 11:02
No, I am way off the range not in any restricted area.  I live here and we fly all the time here.

So why the log message: "GEO: You are in a Warning Zone (Unpaved Airports). Fly with caution."?

Nigel_ Posted at 2017-8-18 12:20
No reason to think it went into Atti, it had lots of GPS satellites.

However it may have been stolen by an eagle: "RTH: Backing up to avoid obstacle" @ 390ft

Ya that wasnt on the other view of log.  I dont know where that came from...it moved on after that.  Unless the sensors messed up and that made it go kookoo.

Given that this was the first test flight, why override the low battery return to home which came up at a sensible time to get it back home?

Nigel_ Posted at 2017-8-18 12:29
Given that this was the first test flight, why override the low battery return to home which came up at a sensible time to get it back home?

I didnt...thats the issue.  I was there waiting for it after it said RTH.  I was like dee da dee.  No drone!!

You can see it go in and out of RTH

fans5f01fa88 Posted at 2017-8-18 12:28
I didnt...thats the issue.  I was there waiting for it after it said RTH.  I was like dee da dee.  No drone!!

You can see it go in and out of RTH

Was it flying into a setting sun during RTH?

Nigel_ Posted at 2017-8-18 12:42
Was it flying into a setting sun during RTH?

No flying north.

Was there firmware issues that caused funky things and aggresive flight?  I see a lot of posts.

fans5f01fa88 Posted at 2017-8-18 12:50
No flying north.

18 degrees off north and it is summer so the sun will go around to NW, I was wondering if the sun got into the edge of the view but I don't know the timing of sunset for your area for that date or how far towards north the sun goes at your latitude.  The obstacle avoidance doesn't like flying into a low sun and there is an obstacle avoidance warning so it seems a possible explanation.

fans5f01fa88 Posted at 2017-8-18 13:09
Was there firmware issues that caused funky things and aggresive flight?  I see a lot of posts.

Most of the current problems are with a firmware update to the P4 and I think this is a P4P so I don't think that is connected. But I don't follow all the P4P problems so I'm not sure.  I also don't understand why it went in and out of RTH mode on the way home, that may be a question for the P4P experts if it wasn't you doing it, or maybe ask DJI support to explain it since it does look like it affected the safe return...

Dji can tell you exactly what happened.  wait for them to respond.

Ya my screen went all black like off afyer I saw RTH, so I dont know what it was looking at wherever it flew too.

ALABAMA Posted at 2017-8-18 13:24
Dji can tell you exactly what happened.  wait for them to respond.

Oh they did.  They said I flew it till battery was dead.  They are terrible at CS.  It is onvious it was in the air at 390ft and had good signal when it disappeared off the record.

I feel like we're missing some data from the end of the flight ... the down link was intermittent at the end of the log.

3.6-ish volts in each cell at the end is getting down there, but should have been enough to keep it in the air. I believe 3.4 is where you start to consider changing out your underwear.

ALABAMA Posted at 2017-8-18 13:24
Dji can tell you exactly what happened.  wait for them to respond.

I did...they said I flew it till battery died.  They are terrible at CS.  The battery was at 19% when it left the record at 390ft up.