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Things to check after salt water crash

Discussion in 'Pro/Adv Discussion' started by Hao Nguyen, Jun 27, 2016.

  1. Hao Nguyen

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    I flew my P3A over the water yesterday. And it too far to see the quad with naked eyes. So I look through my phone. It was about 1km away.

    Everything was ok, 20 GPS signals, remote controller signal is full bar, got only an image weak alert.

    Then tragic happened. I saw the camera flip a lot then the quad disconnected. I asked a local diver nearby to salvage the quad. The camera gimbal was cracked and fell off. It was sunken for about 15 mins.

    After cleaning, drying session. I put in a new battery and start it up. It starts with a gimbal error. So I can't start the motor to check if other things are malfunctioned or not. I check other parts status in DJI app and all of them are normal. So I guess it would take off again after replacing the gimbal & camera.

    I have some questions:
    1. Is there anything I should check physically?
    2. How do I view the crash reason?
    3. Can I claim warranty from DJI if the crash reason is some bird (or jerk) attack my quad?
    This is my flight record:
    Got a lot of speed error before crash.
     
    #1 Hao Nguyen, Jun 27, 2016
    Last edited: Jun 27, 2016
  2. Meta4

    Meta4 Moderator
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    After swimming in salt water, I'd never trust the Phantom again.
    Salt causes corrosion that keeps going across the circuit boards and components.

    Depending on the cause of the incident, you might have luck with DJI if it can be proved that it was a malfunction.

    Go to http://www.phantomhelp.com/LogViewer/Upload/
    Follow the instructions to upload your flight record.
    Come back and post a link to the report it provides and someone might be able to analyse it and give you an understanding of the cause of the incident
     
    Hao Nguyen likes this.
  3. Hao Nguyen

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    After quad retrieval, I rinse it with tap water and sink it in tap water for about 5 mins. I don't see any corrosion on circuit board, but a lot on the battery. So I dispose the battery.

    I'll try and upload flight record here after a moment.
     
  4. Hao Nguyen

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    Hi @Meta4

    I've uploaded flight record. Could you help me diagnose it?
     
  5. With The Birds

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    You should buy a lottery ticket. Found a diver who managed to find it in 15mins 1km away, that was very lucky, a miracle.

    After a dip in salt water its probably not worth wasting your time. If you manage to get it working it wont for long.
     
  6. Hao Nguyen

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    Except some corrosion on the screw, there's nothing on the circuit board. I'm hoping I can claim warranty from DJI.

    Still waiting for some experts to help me diagnose my flight record. Fingers crossed.
     
  7. With The Birds

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    People will be batter able to help you if you post the link to the phantom help log viewer.
     
  8. Hao Nguyen

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    I've included in #1 post. Deleted 2 redundant kml and csv files.
     
  9. kdrak

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    after max flight altitude your aircraft started descending with 78km/h !!!! I guess this is free fall.
     
  10. Hao Nguyen

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    @kdrak Yes, and I'm hoping it's hardware malfunction for a warranty claim


    Sent from my iPhone using PhantomPilots mobile app
     
  11. msinger

    Approved Vendor

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    Please post the link to you log here.
     
  12. With The Birds

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    I would get the .dat file diwnloaded from the AC while it still powers on.

    The .dat will provide much better chance for determining the cause
     
  13. Hao Nguyen

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  14. Hao Nguyen

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    I follow the guide from phantomhelp.com and it said download the log from my iPhone. Is there any different between log from phone and quad?


    Sent from my iPhone using PhantomPilots mobile app
     
  15. With The Birds

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    Yes.... big difference. The aircraft log has a great deal more information. Good chance it wont be long before the AC wont power on again so it would be nice to have the file, especially if you are hopefull of getting DJI to come to the party under warranty.

    DjI could.probably get the file if it doesnt oiwer up but would still be nice to have it yourself. There are a few members here who constantly amaze me in what they can get out of the flight logs
     
  16. Hao Nguyen

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    Could you tell me how to get the file? I turn on the quad and plug it in my Mac, but nothing happen
     
  17. With The Birds

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    Enable flight data mode in the go app then connect to computer with usb cable (port on front of bird, not gimble plate.
     
  18. msinger

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    You can find instructions for retrieving the DAT flight log here.
     
  19. Hao Nguyen

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    I think mine internal storage was burned. I couldn't find the disk after enter flight data mode & use disk utility.

    The only log I could retrieve is from my phone.

    I think I will take it to local DJI Care and see what they can do.
     
  20. With The Birds

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    This thread may help on Mac OS.
    Dji phantom advanced and problem Mac