FORCE LANDING WTF?!

Discussion in 'Mavic Pro Discussions' started by Ed209, Nov 6, 2016.

  1. Ed209

    Ed209 Well-Known Member

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    Was flying just now and as I was heading in the broad in DJI Go says "LANDING". Tapping the red X on the screen didn't abort it but I was able to override it similar to fighting autoland in the P3/P4. As soon as I let off the sticks it would go back and say LANDING. I was over water and about 200ft away. Battery was not even close to low yet. I landed shortly thereafter with 39% left.
    [​IMG]
     
  2. John Locke

    John Locke Active Member

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    Did you check the RTH setting in the GO app? You can have it hover, land, or return to home when signal is lost. It appears your craft lost control signal, but at only 1/2 mile range this shouldn't happen unless you fly behind something like a building or mountain. You said you were over water, so that's really strange to get a weak signal, assuming you had LOS.
     
  3. Ed209

    Ed209 Well-Known Member

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    Look at the log I posted...it was 184ft in front of me...Really scary!
     
  4. Ed209

    Ed209 Well-Known Member

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    Also, my RTH setting is set to come back and land. But it wasn't in RTH mode. Signal score on the flight was 100 too.
     
  5. Ed209

    Ed209 Well-Known Member

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    Here's the video proof :) Needless to say, I just purchased DJI Care before the 48hr cutoff...Must be a logic bomb set by DJI to nab an extra $100. Skip to 11:50.
     
  6. m0j0

    m0j0 Well-Known Member

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    If it had landed in the water DJI Care would not have helped.
     
  7. m0j0

    m0j0 Well-Known Member

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    Wow why was it switching to ATTI so often.
     
  8. Ed209

    Ed209 Well-Known Member

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    I don't see anything in the terms indicating they wouldn't. If you assumed that I wouldn't be able to retrieve then you were wrong. It was actually only about 40ft from where I was standing. I realized I walked off the pier back to the shoreline where it started descending. I was actually closer than reported since my home point was out on the pier.
     
  9. Ed209

    Ed209 Well-Known Member

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    That happens in sport mode.
     
  10. Ed209

    Ed209 Well-Known Member

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    To clarify, it seems that it switches to ATTI for a split second when going from sport to GPS mode.
     
  11. m0j0

    m0j0 Well-Known Member

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    Ok I was going ask if maybe there was some interference .. I am interested to read what the experts say about this... when it happened you kept it from descending by holding the left stick up correct?
     
  12. m0j0

    m0j0 Well-Known Member

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    Yep.. I assumed you wouldn't be able to get it but after actually watching the video I get your point on DJI Care... I'm with you, I think I'm going to drop the money too.
     
  13. 4wd

    4wd Well-Known Member

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    What does healthy drones say about the battery cells?
    It looks like a forced landing due to low voltage regardless of percentage remaining.
    There was some quite aggressive fast flying which could have given it enough workout to be getting low by 12 minutes.
    You can have the app show voltage on screen and it will typically drop quite low briefly if for example you ascend rapidly.
     
  14. Ed209

    Ed209 Well-Known Member

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    It was maximum 40ft from me when the landing started. You better believe that I would roll up my pants and walk out there to get it lol. On second look I see that it was switching into ATTI right during the force landing event and I definitely was in GPS mode then. I looked at previous flights and it does flip to ATTI when exiting sport mode though.
     
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  15. Ed209

    Ed209 Well-Known Member

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    All good there... No major deviations.
     
  16. djholt

    djholt Well-Known Member

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    Technically, DJI Care does not cover anything that results from water damage--even if water damage were to occur following the original problem. Even still, I purchased the protection. For your reference, here is a list of the exclusions:

     
  17. Ed209

    Ed209 Well-Known Member

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    I would argue to the death that the water landing was not by my negligence and due to some other issue with their software. Unless I'm totally missing something with this force landing. I am at a loss for an explanation as to why it happened. Here's another markup of the situation. You'll see my home point and also where I was standing relative to the force landing events. It was litterally right in front of me. I was watching it descend and I even left it to hover for a second to see if it would do it again, and it did.
    [​IMG]
     
  18. Mavic_Man504

    Mavic_Man504 Well-Known Member

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    was vps turned off?Read that it's best to turn it off when flying over water at low altitudes

    Sent from my SM-G935V using MavicPilots mobile app
     
  19. Ed209

    Ed209 Well-Known Member

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    I had it on and also stereo vision sensors. I don't think VPS would be causing this...It just makes it hard for the sensors to judge altitude.
     
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  20. Steve

    Steve Member

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    Off topic a little, but is there a fan in the controller or something? Sounds like something spun up at 6:57.. I wonder if there might be a problem with the controllers..
     
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