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Mavic Air Crash :(
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j2thafree
lvl.2

United States
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My Mavic Air went a little haywire on saturday. It was a completely calm day and the drone shot sideways up to about 20 mph and crashed hard into a pile of concrete. This did some damage to the front right arm. I looked back at the flight logs and it seems that it sped up all on its own with out my input. It was not in sport mode and all obstacle avoidance systems were up. I'm going to submit a repair request but was curious if someone could tell me if it would be a warranty repair or not.
I have a trip coming up mid July and really wanted to bring my drone along with with me. Anyone have an estimate on how long it takes for issues to be resolved if approved?

2018-6-25
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Bokepacha
Second Officer
Flight distance : 149265 ft
Netherlands
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Sorry to hear that.

If the drone went sideways, there are no sensors there to stop it, so Sport mode or not...it will collide with everything in it's path.
2018-6-25
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DJI Stephen
Super Moderator

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Sorry to know that your DJI Mavic Air crashed. Please try to contact DJI repair so that you can send the drone in and our DJI repair team can start the assessment once they receive the Drone. I will be posting the online repair request link https://repair.dji.com/repair/index.
2018-6-25
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A CW
Captain
Flight distance : 13123609 ft
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United Kingdom
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Sorry to read that - hope you get it replaced soon.
2018-6-25
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Montfrooij
Captain
Flight distance : 1915335 ft
Netherlands
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Sad to hear.
If you want, please share the flight log here.
2018-6-25
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j2thafree
lvl.2

United States
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Montfrooij Posted at 2018-6-25 06:45
Sad to hear.
If you want, please share the flight log here.

I see in my app that the flight log as synced online but don't see it in the logs folder. Do you know the standard filepath?
2018-6-25
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SparksBird
Captain
Flight distance : 10693363 ft
United States
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Sorry to hear.  you can upload your flight log here.  http://www.phantomhelp.com/LogViewer/Upload/
2018-6-25
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SparksBird
Captain
Flight distance : 10693363 ft
United States
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j2thafree Posted at 2018-6-25 06:46
I see in my app that the flight log as synced online but don't see it in the logs folder. Do you know the standard filepath?

Depending on what device you have depends on where it will be.  The link I sent has instructions on how to retrieve and upload here.  
2018-6-25
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WayneMHK
Second Officer
Flight distance : 694728 ft
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United States
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Sounds like another victim of .0400.  Hope you get quick resolution.
2018-6-25
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j2thafree
lvl.2

United States
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SparksBird Posted at 2018-6-25 06:50
Depending on what device you have depends on where it will be.  The link I sent has instructions on how to retrieve and upload here.



Even after refreshing my device, no log appears for 6-23. They do still appear in the DJI Go App.
2018-6-25
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j2thafree
lvl.2

United States
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WayneMHK Posted at 2018-6-25 06:51
Sounds like another victim of .0400.  Hope you get quick resolution.

Is this a known issue?
2018-6-25
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j2thafree
lvl.2

United States
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Looks like my Flight distance is WAY OFF too.
2018-6-25
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3-D
Captain
Flight distance : 517598 ft
United States
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I can't speak for whether it will be covered under warranty.  It will depend on the flight logs and what they can prove.
I'm in the process of tracking a repair here, so you can follow if you would like...  I'm currently 7 days from the day i shipped it.

Hope you get it back in time for your trip!
2018-6-25
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3-D
Captain
Flight distance : 517598 ft
United States
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So, there are a few threads about problems that users have had with the latest firmware update.  
I can't answer yes to your  question, because DJI hasn't officially acknowleged it, but  there are quite a few complaints about it.

But before you blame it on that continue on the path of trying to find your logs.  Hopefully we'll be able to figure out what happened.
2018-6-25
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Wachtberger
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Flight distance : 261509 ft
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No, this is not a known issue. Just open your warranty case with DJI and send your aircraft for repair. They will analyse the blackbox data and if a malfunction can be identified it will fall under warranty.
2018-6-25
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HedgeTrimmer
Captain
United States
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Wachtberger Posted at 2018-6-25 07:37
No, this is not a known issue. Just open your warranty case with DJI and send your aircraft for repair. They will analyse the blackbox data and if a malfunction can be identified it will fall under warranty.

Flaky MA behavior with .0400 FW is a known.
Whether it is culprit in this case is an unknown.  
2018-6-25
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HedgeTrimmer
Captain
United States
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j2thafree Posted at 2018-6-25 06:58
[view_image]

Even after refreshing my device, no log appears for 6-23. They do still appear in the DJI Go App.

Upload the FlightLog file for that incident (aka crash) from Smartdevice that was running GO-4 app.
Not as informative as FlightLog from MA, but far better than nothing.

Why there is no FlightLog on MA for incident is a big question.
There should also be BlackBox data on MA for incident.  However, only DJI (and NSA) can read it.
2018-6-25
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j2thafree
lvl.2

United States
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SparksBird Posted at 2018-6-25 06:49
Sorry to hear.  you can upload your flight log here.  http://www.phantomhelp.com/LogViewer/Upload/

http://www.phantomhelp.com/LogViewer/4GDB09LWZR70ZY5NKOUF/

Flight log found.
2018-6-25
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SparksBird
Captain
Flight distance : 10693363 ft
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j2thafree Posted at 2018-6-25 09:08
http://www.phantomhelp.com/LogViewer/4GDB09LWZR70ZY5NKOUF/

Flight log found.

Well the big issue here is you took off without GPS lock(at least 8 sats or more) and no home point updated.  When in ATTI mode is much harder to control as it does not know it's position.  
2018-6-25
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Wachtberger
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Flight distance : 261509 ft
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SparksBird Posted at 2018-6-25 09:16
Well the big issue here is you took off without GPS lock(at least 8 sats or more) and no home point updated.  When in ATTI mode is much harder to control as it does not know it's position.

Why am I not surprised? When reading the crash description this scenario came first to my mind because it is unfortunately quite frequent among new pilots.
Yet, to be really on the safe side even 8 satellites are not sufficient. The absolute minimum is 6 from either GPS or GLONASS. But since you don't know to which of them you are linked, you need a minimum of 11 satellites to be sure to have 6 of either system.
In summary this will not be a warranty case.
2018-6-25
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HedgeTrimmer
Captain
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SparksBird Posted at 2018-6-25 09:16
Well the big issue here is you took off without GPS lock(at least 8 sats or more) and no home point updated.  When in ATTI mode is much harder to control as it does not know it's position.

From log and crash, no doubt problem goes back to lack of enough Satellites for GPS.

Would be interesting to have a few screen-snaps of GO-4 at time to see what Pilot was shown and missed.
2018-6-25
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EdisonW1979
First Officer
Flight distance : 1535679 ft
Canada
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Wachtberger Posted at 2018-6-25 07:37
No, this is not a known issue. Just open your warranty case with DJI and send your aircraft for repair. They will analyse the blackbox data and if a malfunction can be identified it will fall under warranty.

Stop spreading misinformation, yes this is a known issue with MA on 0400, even if DJI refuses to acknowledge it, the amount if people now coming forward with this issue confirms it.

Threads detailing SERIOUS issue with Mavic Air FW v01.00.0400
In this case though it may have been lack of GPS locks, but even then, not having enough GPS should NEVER prompt the drone to suddenly take off and try to kill itself spontainiously!
2018-6-25
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nixuspix
Captain
Flight distance : 2772178 ft
Latvia
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I agree  100% to Wachtberger. You should not take off until at least 12 sats are locked and without 100% sure, that the HP is fixed
2018-6-25
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3-D
Captain
Flight distance : 517598 ft
United States
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I agree with the assessment made by the other pilots here.   Based on the flight logs, this will not be covered under warranty.
However, if it is only the front right arm, it shouldn't be that expensive.

Check here.

Support says that repairs should normally take 7-10 days from the time they receive it.    Personally, I am in Day 2 of them having it in their possession and waiting for an update on the assessment.

Good luck to you.
2018-6-25
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j2thafree
lvl.2

United States
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Duly noted on taking off without a HP locked in. Usually in such calm conditions I let it hover until it locks it in. That lesson is now learned as I am still fairly new to piloting. I was keeping the flight very low and close in this instance since I was trying to take a group photo at our block party. Its never flown that erratically even in ATTI mode. I'm still hoping it would be covered under warranty. The video of the controls during the flight is more telling as to how badly it went awry without any pilot input.
2018-6-25
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Wachtberger
Captain
Flight distance : 261509 ft
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EdisonW1979 Posted at 2018-6-25 10:27
Stop spreading misinformation, yes this is a known issue with MA on 0400, even if DJI refuses to acknowledge it, the amount if people now coming forward with this issue confirms it.

Threads detailing SERIOUS issue with Mavic Air FW v01.00.0400

Sorry, but if anyone in this forum is spreading "misinformation" you are the record holder. Thus better inform yourself first.
2018-6-25
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3-D
Captain
Flight distance : 517598 ft
United States
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j2thafree Posted at 2018-6-25 11:32
Duly noted on taking off without a HP locked in. Usually in such calm conditions I let it hover until it locks it in. That lesson is now learned as I am still fairly new to piloting. I was keeping the flight very low and close in this instance since I was trying to take a group photo at our block party. Its never flown that erratically even in ATTI mode. I'm still hoping it would be covered under warranty. The video of the controls during the flight is more telling as to how badly it went awry without any pilot input.

Best of luck to you.  I hope you are able to get some relief, get your warranty work done, and get your bird back.

2018-6-25
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EdisonW1979
First Officer
Flight distance : 1535679 ft
Canada
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Wachtberger Posted at 2018-6-25 12:11
Sorry, but if anyone in this forum is spreading "misinformation" you are the record holder. Thus better inform yourself first.

Sorry, but I've only collected all the complaints and issues and compiled them into one thread, a thread that you and your friend hallmark007 have littered with attacks against those who dare speak against your two opinions.

In this case yes, insufficient GPS locks may be the culprit, but as I stated, in no way should that prompt a drone to spontaneously want to kill itself! That is not misinformation, that is common sense observation.

And yes, there ARE problems with 0400, so stop trying to keep peddling the FUD there isn't.

It's gotten to the point from now on, every time you make claims to contrary, I will post links to ALL the posts that have evidence there are issues.
2018-6-25
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EdisonW1979
First Officer
Flight distance : 1535679 ft
Canada
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j2thafree Posted at 2018-6-25 11:32
Duly noted on taking off without a HP locked in. Usually in such calm conditions I let it hover until it locks it in. That lesson is now learned as I am still fairly new to piloting. I was keeping the flight very low and close in this instance since I was trying to take a group photo at our block party. Its never flown that erratically even in ATTI mode. I'm still hoping it would be covered under warranty. The video of the controls during the flight is more telling as to how badly it went awry without any pilot input.

Hi @ j2thafree,

As other pilots here have stated, yes it is never a good idea to take off without a locked in HP and without sufficient locked-on GPS satellites.

However, as I've stated before, the implied logic by other pilots here that the behaviour you exhibited with your drone because of the GPS and HP situation is to be expected does not make any logical sense... A drone shouldn't just decide it wants to kill itself in these situations. This to me screams bad programming, or bug in the firmware, and from all the threads here and on other forums online, it's now well established the current 0400 FW is pretty buggy.

Fight for getting the drone replaced, since I still think FW bugs played a part in this, and keep your fingers crossed you'll get it repaired / replaced under warranty.

And yes, in the future, don't take off until those sats and HP are locked in tight

Best of luck to you mate!
2018-6-25
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Wachtberger
Captain
Flight distance : 261509 ft
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j2thafree Posted at 2018-6-25 11:32
Duly noted on taking off without a HP locked in. Usually in such calm conditions I let it hover until it locks it in. That lesson is now learned as I am still fairly new to piloting. I was keeping the flight very low and close in this instance since I was trying to take a group photo at our block party. Its never flown that erratically even in ATTI mode. I'm still hoping it would be covered under warranty. The video of the controls during the flight is more telling as to how badly it went awry without any pilot input.

I wish you good luck as well but you need to understand that in ATTI mode the aircraft cannot control itself, it can even not brake. Thus the slightest movement it might have started with will continue until the pilot reverses it with full throttle into a safe direction. It is very understandable that in a narrow flying environment where this particular flight has taken place, there is almost no time for the pilot to react appropriately. But this case underlines once more how important all pre flight checks are, including sufficient satellites.
2018-6-25
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Aardvark
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EdisonW1979 Posted at 2018-6-25 12:29
Hi @ j2thafree,

As other pilots here have stated, yes it is never a good idea to take off without a locked in HP and without sufficient locked-on GPS satellites.

It didn't take off spontaneously and try and kill itself. There was input from the control sticks that caused it to take off and move (detail can be seen in the CSV file). Being in ATTI mode there was no active braking, so even with sticks released it would still drift for a bit. It looks very unlikely that this had anything to do with firmware or Application error.
2018-6-25
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Aardvark
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Flight distance : 384432 ft
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j2thafree Posted at 2018-6-25 11:32
Duly noted on taking off without a HP locked in. Usually in such calm conditions I let it hover until it locks it in. That lesson is now learned as I am still fairly new to piloting. I was keeping the flight very low and close in this instance since I was trying to take a group photo at our block party. Its never flown that erratically even in ATTI mode. I'm still hoping it would be covered under warranty. The video of the controls during the flight is more telling as to how badly it went awry without any pilot input.

I wish you well with your claim, DJI might cover it after examining your data.
2018-6-25
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QuadKid
Captain
Flight distance : 482349 ft
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1st let me say very sorry for the damaged caused,Took a closer look at your Log, You may get some grief from DJI on this one as you probably should not have attempted takeoff.

1st pic is your flight summary, No Home Point, multiple compass errors



2nd pic (second chart) shows GPS satellites and reception virtually non existant and went into Atti mode quickly.



3rd pic show multiple areas of weak or no signal



4th pic shows input command from the RC, looks like you were trying very hard to regain control.

2018-6-25
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HedgeTrimmer
Captain
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QuadKid Posted at 2018-6-25 14:26
1st let me say very sorry for the damaged caused,Took a closer look at your Log, You may get some grief from DJI on this one as you probably should not have attempted takeoff.

1st pic is your flight summary, No Home Point, multiple compass errors

Appears 1st Compass error came 13-seconds into flight?

Which has me asking - Whether the OP saw a Compass Error or Warning prior to takeoff??

2018-6-25
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HereForTheBeer
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Wachtberger Posted at 2018-6-25 07:37
No, this is not a known issue. Just open your warranty case with DJI and send your aircraft for repair. They will analyse the blackbox data and if a malfunction can be identified it will fall under warranty.

dji is worse than apple about admitting issues.. this makes it hard to figure out the real source of the issue on software or hardware difficult..   i do believe the mavic air has some fundamental flaw in it, either in firmware/software or in its hardware causing common issues.

yes you have a golden example mavic air, as does several others here, and that's awesome, i'm happy for you and others with golden examples.. similar story with my mavic pro, its effectively a golden example, barely any issues.. but just look around.. both platforms have their issues.  mavic pro has a NASTY history with some flaky models still in existence on shelves being purchased. mavic air has some flaw in it causing problems as well.

we see it all around us, some of us chosen to be blinded by our own good luck, some of us feel like we know better than others, etc.. but hard to ignore the number of negative threads that get created, on this honestly, tiny forum, not that many members here, most of us known each other on these forums for a good while..
2018-6-25
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hallmark007
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Flight distance : 5740837 ft
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There are two ways you can look at this.

First way, you just have to start up your drone and off it flies and nothing can ever go wrong with it, and if it does it’s always somebody else’s fault.

Second way , this is a hobby you are given the tools to learn to fly in safe envoirments, to become better as a pilot, to take great photography, to learn how your aircraft works best for you, to get great enjoyment from learning to be really great at this hobby and get the most out of it.

Yes we all make mistakes, no one is perfect, but it’s what we learn from those mistakes is what makes us better pilots, put this down to experience and move on, hopefully dji will make you some decent offer and you can go back to flying soon , or repair cost won’t be to taxing.

There are some here who would have you believe that this is all dji’s fault, this is because they don’t can’t and probably never will either learn about these drones or simply will never learn to fly.
They spend all their time on this forum whinging and complaining , but never getting anything sorted, they are not here to help, but cause hysteria.

I wish you luck and hope it works out for you.
2018-6-25
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j2thafree
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HedgeTrimmer Posted at 2018-6-25 14:29
Appears 1st Compass error came 13-seconds into flight?

Which has me asking - Whether the OP saw a Compass Error or Warning prior to takeoff??

There was no compass error prior to take off.
2018-6-25
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hallmark007
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Flight distance : 5740837 ft
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j2thafree Posted at 2018-6-25 15:52
There was no compass error prior to take off.

I have left video below, it explains why you don’t always get a warning on the ground.

2018-6-25
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HedgeTrimmer
Captain
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j2thafree Posted at 2018-6-25 15:52
There was no compass error prior to take off.

Thanks for information and reply.
Several more questions:  
What kind of surface/area did your drone takeoff from?
Was there any ferrous metal (aka steel) within 1-meter or 3-feet of takeoff point?
Any high voltage power lines near takeoff point?

2018-6-25
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hallmark007
Captain
Flight distance : 5740837 ft
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Ireland
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EdisonW1979 Posted at 2018-6-25 10:27
Stop spreading misinformation, yes this is a known issue with MA on 0400, even if DJI refuses to acknowledge it, the amount if people now coming forward with this issue confirms it.

Threads detailing SERIOUS issue with Mavic Air FW v01.00.0400

Drone didn’t just take off , controller decided to take off, you need to go back and read your manual there are 3 flying modes on these drones, and anyone flying them should be aware of this, it’s no comfort to anyone , trying to tell them this is 0400 issue, it’s not 0400 or any other FW won’t help in this situation. And it’s very important that we help by giving the right advice for this situation.
If you feel you need to add to your list, I suggest you go back through every FW update for every dji drone since it’s incept, it wouldn’t be fair to leave any FW out.
2018-6-25
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