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Crashed during Active Track. What's the reason?
3368 23 2018-9-23
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ShoTorhead
lvl.1
Flight distance : 31988 ft
Georgia
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Hello

Here is the log of the flight. I hope i chose the correct file
https://www.phantomhelp.com/logviewer/74PG6MAKF8FIRJYYOC6K/


Did an active track, tracking my car. The ground wasn't elevating. Not sure why did the AC decrease it's alltitude.

Here is the video.


Please let me know what is wrong, so i can avoid it in the future.
And why didn't OA work and stop it from crashing? (it was definitely on)
Thanks

2018-9-23
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saviour
First Officer
Flight distance : 604203 ft
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It's a known issue with the newest firmware, many people have shown videos where the drone suddenly dives in using active track.
DJI is not fixing it for some reason.
2018-9-23
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ShoTorhead
lvl.1
Flight distance : 31988 ft
Georgia
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saviour Posted at 2018-9-23 05:37
It's a known issue with the newest firmware, many people have shown videos where the drone suddenly dives in using active track.
DJI is not fixing it for some reason.

I do not have the newest firmware. I am still on the previous one, i think .400 if i remember correctly.
2018-9-23
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saviour
First Officer
Flight distance : 604203 ft
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.400 is the newest firmware.
2018-9-23
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ShoTorhead
lvl.1
Flight distance : 31988 ft
Georgia
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saviour Posted at 2018-9-23 06:18
.400 is the newest firmware.

.500 is the latest
2018-9-23
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saviour
First Officer
Flight distance : 604203 ft
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Oh sorry, I thought your drone is the MA. Well, at the MA it's as I said often reported that the drone dives down... I'd open a ticket and hope for warranty if something is damaged.
2018-9-23
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JJBspark
Captain
Flight distance : 1176729 ft
Netherlands
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Hi,

Hope you did not suffer too much damage!

Does anyone knows if active track uses baro height or vps height?

Weird to see that while the MP is descending the baro height remains the same! (oke, not that accurate but 6 meter difference should be noticed).
Looks like that the active track looses the car when the white side-boards on the road are spotted.

Wish you had a screen recorder active, those recordings are so valueable to see what was on the GoApp screen.

Did you pitched down by accident while driving the car? see at ID 630  ;-)

cheers
JJB
analysis2.png
2018-9-23
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ShoTorhead
lvl.1
Flight distance : 31988 ft
Georgia
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JJBspark Posted at 2018-9-23 06:31
Hi,

Hope you did not suffer too much damage!

Thank you for your reply.

I am not sure if i did. Don't think so.
Yes, it's very bad i didn't have screen recording

My friend told me it could have happened because of the ground elevation, but i really do not think this is the case, according to the video, right?

I also think that's(White side boards) when AT messed things up, but why didn't OA work?

P.S.
Also, double checking, this seems to be the correct recording right? Because there are couple and i wasn't sure which one was crash. This one seems correct one?

2018-9-23
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JJBspark
Captain
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Netherlands
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ShoTorhead Posted at 2018-9-23 06:39
Thank you for your reply.

I am not sure if i did. Don't think so.

Hi ShoTorHead,

Hard to tell from the video how much the elevation is, approx 130 meter with 6 meters (not feet!) ascend.
You been there...so you can tell us.

Another weird thing is that the mode changed back to GPS mode from ActiveTrack and back again.
And now 100% pitch up for short period.

Why OA did not work, don`t know (have to read the manual again)

cheers
JJB


2018-9-23
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DJI Stephen
Super Moderator

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Hi there, thank you for reaching out and we're very sorry for the trouble that you experienced. Regarding that concern, I would suggest to reach out one of our support channels just go to this link https://www.dji.com/support for you to have an assistance about the concern and create you a case if it's possible for further investigation and to find out as well what could be the cause.
2018-9-23
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ShoTorhead
lvl.1
Flight distance : 31988 ft
Georgia
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DJI Stephen Posted at 2018-9-23 09:07
Hi there, thank you for reaching out and we're very sorry for the trouble that you experienced. Regarding that concern, I would suggest to reach out one of our support channels just go to this link https://www.dji.com/support for you to have an assistance about the concern and create you a case if it's possible for further investigation and to find out as well what could be the cause.

Thanks! I will do it , but i am no longer in USA. And there is no DJI official repair centers nearby, so i won't be able to send it in. Should i still contact support group?
2018-9-23
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Steeevo
Second Officer
Flight distance : 264879 ft
United Kingdom
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That was depressing to watch that. I bet you felt sick seeing it go down sooo slowly. It looked like it was on a downwards path from the get go
2018-9-23
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A CW
Captain
Flight distance : 11526437 ft
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United Kingdom
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Sorry see that - hope you get it sorted with DJI soon.
2018-9-23
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fans5c7ee34c
lvl.4
Flight distance : 221532 ft
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JJBspark Posted at 2018-9-23 06:31
Hi,

Hope you did not suffer too much damage!

What software is this ? It looks great.
2018-9-26
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HedgeTrimmer
Captain
United States
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In video it looks like drone started out with enough height to make it well past where road disappears (down hill).  Around TimeMark 0:13, drone pitches slightly forward heading for ground.
2018-9-26
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Bob Brown
First Officer
Flight distance : 3772907 ft
United States
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for shame DJI. I just do not trust any autonomous DJI functions for this reason and fear of hurting others.
2018-9-27
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G_Sig
Captain
Flight distance : 5331640 ft
Iceland
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HedgeTrimmer Posted at 2018-9-26 18:41
In video it looks like drone started out with enough height to make it well past where road disappears (down hill).  Around TimeMark 0:13, drone pitches slightly forward heading for ground.

You might bee right. This is what Google Earth show.
2018-9-27
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ShoTorhead
lvl.1
Flight distance : 31988 ft
Georgia
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This is the LAST time i am using Active Track.
2018-9-27
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JordanM
First Officer
United States
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2018-10-11
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MyPC8MyBrain
lvl.2
Flight distance : 1480 ft
United States
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same thing happened to me today, waypoints with proper elevation, it was flying at its right elevation when it decided to just descend into a mountain side for no reason
brand new unit just released last week with the new smart controller bundle, 2000$ down the drain DJI!

but keep giving free drones to your YouTube promoters instead of taking care of your actual customers,
this is not an operator mistake as it was operating waypoint on its own, unlike the video above mine decided to dive on the side of the Hollywood sign mountain,

i was watching it the whole time; it happened so fast i wasn't expecting it as it did the steps prior perfect and than just went down with at least 90% power as it just started the route and was at point 6 out of 97,
what now DJI, i trusted you!
2-6 18:43
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photographermarbella
lvl.3
Flight distance : 6280 ft
Spain
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Wow, that is truly heart wrenching to watch. Did you discover what/why this happened and did DJI fix the drone for you? Looks like there wasn't much you could have done to change this one!
2-7 01:40
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photographermarbella
lvl.3
Flight distance : 6280 ft
Spain
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MyPC8MyBrain Posted at 2-6 18:43
same thing happened to me today, waypoints with proper elevation, it was flying at its right elevation when it decided to just descend into a mountain side for no reason  
brand new unit just released last week with the new smart controller bundle, 2000$ down the drain DJI!

Yea, I know what you mean. It's easy to sell the goods not so easy to sort out the issues! When its automated flight you don't have much time to cancel when you see it going wrong as you just assume it know what it's doing! Good luck and tell me how you get on.
2-7 01:42
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eYeSkYeYe
Captain

Croatia
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JJBspark Posted at 2018-9-23 06:31
Hi,

Hope you did not suffer too much damage!

You have a point here.... something weird happening with barometer.
Either it does not get readings too frequently or sensitivity is very bad... 6 meters should have  been sensed.
2-7 02:08
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MyPC8MyBrain
lvl.2
Flight distance : 1480 ft
United States
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three weeks later being extremely compliant with DJI engineers in hope they can find the bug and fix it,
logs show unit lost signal with remote and changed modes and decided landing on its own,

i contacted their support to report this, i never asked for replacement once,
they were more concerned in getting their hands on my logs which i also uploaded to AirData to decipher, logs clearly show  the bug!
they never once said i did something wrong in my operations, but they refuse to admit the bug is there when its clearly shown to them black on white
2-24 21:02
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