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That left a mark: possible prop loss or power loss mid-air?

Discussion in 'Pro/Adv Discussion' started by johnbrownlow, Mar 10, 2016.

  1. johnbrownlow

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    Hey folks,

    First post and not a happy one.

    Was running DroneDeploy and P3P went up to 250' to begin mission in rural area with no obstructions. Wind was gusting a bit. Suddenly it plummeted directly down, tumbling as it went. It hit so hard it left a crater.

    Data points:

    Bird is a total loss. When I got there, there were only three props attached and the bare motor was covered with mud which suggests to me it had no prop on when it hit. I haven't found the other prop yet.

    Battery was new with maybe 10 flights on it.

    Props had been attached and hand tightened a couple of successful flights previously.

    Everything was bone stock, no third party anything. Probably 20 flights total on it.

    Because I was running DroneDeploy I think the only logs are the internal P3 ones. How do I get these off (the P3 will not power up since it is destroyed!).

    My best guess as to what happened is that the P3 got hit by a gust and strongly decelerated one of the motors, which caused the prop to fly off. The other scenarios I guess are a seized motor or a total power loss.

    Any help appreciated, especially how to get and analyze what logs there are.
     

    Attached Files:

  2. msinger

    Approved Vendor

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    You can find more details on retrieving the internal Phantom flight logs here.
     
  3. happydays

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    The logs are on an internal SD card - it's fairly well glued in place I believe! The phantom will need to be powered on in order to access the flight data AFAIK. If it's a total loss, you might be able to open it up and remove the SD card? Unfortunately nothing is stored in the cloud.
     
  4. johnbrownlow

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    It does not power on. It tried with a fresh battery and there was the 'pop' of a short and nothing more.
     
  5. Vind

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    That's an unhappy ending. I will for now on make sure props are tight before each flight


    Sent from my iPad using PhantomPilots mobile app
     
  6. Oso

    Oso

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    Your photo is so hard to look at. I feel badly for you sir.

    It's not a much of consolation for you I understand, but hopefully your story will resonate with the folks who insist that props can't come off in flight.
     
  7. dirtybum

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    Yeah, but that crater is the dopest pic i've seen today!!
     
  8. happydays

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    If it's a total loss, open it up and extract the internal sd card.

    P3-Center-Board-Memory-Card.jpg
     
  9. Multicoptertec

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    For the future, if you have a hard crash, I would not recommend attempting to power up your bird until it is thoroughly inspected, inside and out. That "pop" you heard may have fried something that could have been salvaged.
     
  10. jptsr1

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    Been there Bro. Sorry for your loss. At least new birds are 799 on Ebay for the whole kit and 704 bird only from DJI. If I had had to take a hit for the original price I would have been sick.
     
  11. johnbrownlow

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    I managed to get the log card out of the poor thing. Now let's see what happened.