Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Uncontrolled descent

Discussion in 'Phantom 2 Vision Help' started by Questor, Oct 9, 2016.

  1. Questor

    Joined:
    Dec 16, 2014
    Messages:
    32
    Likes Received:
    4
    Location:
    Diamond Bar, CA.
    Hello All.

    I was flying earlier today and things were normal. The Drone was hovering about 400 feet away and about 200 feet up. Then without any input from me, it began to drift and descend.
    I gave controller inputs for full "Up" but it didn't help. The drone descended and dropped out of sight below some houses on the horizon.

    I was able to find the drone in a neighbors back yard with the motors still running, thank goodness, but I still can't account for why this happened. Battery was still half full and I was attempting to bring it back for a landing.

    I was recording video when this happened, but I can't get the .MP4 file to open... (Girrr...)

    Any ideas or suggestions for what I should do next?

    Thank you in advance.
    Q~
     
  2. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    3,960
    Likes Received:
    1,156
    Location:
    Brookeville, MD, USA
    Sounds like it went into autoland.

    Did you launch with a fully charged battery? Or was it only partially charged at launch?

    Mine did that at 27% battery last week. If your battery is old, it may behave oddly.
     
  3. Questor

    Joined:
    Dec 16, 2014
    Messages:
    32
    Likes Received:
    4
    Location:
    Diamond Bar, CA.
    I don't think so. Thr battery was still above 50% and the controler said I had 11 minutes left. Maybe the battery needs to be checked.
    Does anyone here know how tonget and interpret the flight log?
    Q~
     
  4. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    3,960
    Likes Received:
    1,156
    Location:
    Brookeville, MD, USA
     
  5. Great_Lakes

    Joined:
    Apr 22, 2016
    Messages:
    263
    Likes Received:
    67
    Location:
    South Eastern Michigan
    I agree with Markmnd. Sounds exactly like autoland. Especially since you found it sitting with the motors running! I have also read that in some cases, (I think with a certain firmware) your phantom can and will auto land if you fly into a "no fly zone" or restricted area. Not sure if that is your case.

    I'm glad it didn't auto land on someone's head! :)
     
  6. Cobs

    Joined:
    Sep 12, 2016
    Messages:
    405
    Likes Received:
    116
    Location:
    Cumbria, UK
    I had a battery once that seemed fine until you gave it full power in any direction - it just slowly sank to the ground and landed/bounced, even with full throttle and 92% battery, was definately a battery fault as they replaced it and it never happened again.
     
    #6 Cobs, Oct 10, 2016
    Last edited: Oct 10, 2016
    Great_Lakes likes this.