Welcome to PhantomPilots.com

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

P3P drops from sky into Mississippi flood, flood wins

Discussion in 'Pro/Adv Discussion' started by rickray, Jan 7, 2016.

  1. rickray

    Joined:
    Jun 2, 2015
    Messages:
    67
    Likes Received:
    58
    Location:
    Ventura, CA
    ......but what happened?

    Never a hint of a problem, and a great trouble free craft for 26 consecutive flights.

    Normal successful calibration, normal startup, aircraft "safe to fly", GPS lock, takeoff, no significant weather to speak off. Flight was at about 20 ft off ground and moving forward across moving floodwaters of the Mississippi covering a roadway. About 4 minutes into flight, it drops from the sky directly into the water. Flight data states that one second before the drop, the craft went into ATTI mode and the controller said "ATTI mode". It was impossible to control and instantly crashed, carried off to New Orleans from St. Louis. No recovery possible.

    There were some high tension power lines about 100 yards away but calibration was performed normally and I have flown within that distance of high tension power lines before without anything happening. I can understand if the lines were directly overhead or extremely close, but why would the craft just instantly enter ATTI mode and crash because of relatively distant ones?

    I am attaching link to the flight log. I've been on Healthy Drones and can't see anything unusual, maybe more seasoned eyes can help on this forum. Based on this, I think I have a legitimate claim with DJI for a replacement. I am a moderately experienced pilot, not a novice and was flying slowly and normally. I feel this crash was not my fault.

    Please note that the GPS shows a relatively dry area but at the time of this flood, the water was moving swiftly across this road and where it crashed was in about 3-5 feet of water.

    HealthyDrones.com - Innovative flight data analysis that matters
     
  2. dreck

    Joined:
    Nov 28, 2015
    Messages:
    10
    Likes Received:
    3
    did you disable VPS? it can cause problems when flying low over water
     
  3. rickray

    Joined:
    Jun 2, 2015
    Messages:
    67
    Likes Received:
    58
    Location:
    Ventura, CA
    Yes, VPS was off.
     
  4. With The Birds

    Joined:
    Jan 4, 2016
    Messages:
    2,620
    Likes Received:
    751
    Location:
    Australia
    Have a look at the sensors tab, looks like the compass threw a leg out of bed....

    Did you look at the mod value for the compass before takeoff?
     
  5. Blue Bird

    Joined:
    Jun 11, 2015
    Messages:
    615
    Likes Received:
    159
    Location:
    Dade County, Florida
    How many satellites did you have locked in?
     
  6. phantom13flyer

    Joined:
    May 26, 2015
    Messages:
    1,351
    Likes Received:
    404
    What is going ?? This seems to be happening at an alarming rate.
     
    TacAir42 likes this.
  7. rickray

    Joined:
    Jun 2, 2015
    Messages:
    67
    Likes Received:
    58
    Location:
    Ventura, CA
    The report shows the GPS satellite count as 15+. I can see the compass goes crazy at the end, ostensibly for no reason. Is there something in the controls I could have looked at before takeoff which would have told me that a 4 minute totally normal flight would suddenly go haywire?
     
  8. KyleMaxxUAV

    Approved Vendor

    Joined:
    Jan 4, 2016
    Messages:
    1,113
    Likes Received:
    313
    Just wondering ... Old or new style of motors ?


    Sent from my iPad using PhantomPilots mobile app
     
  9. Travis726

    Joined:
    Jan 7, 2016
    Messages:
    104
    Likes Received:
    17
    These are starting to scare me a little. I will be buying a uav in about a month (love tax time). Was set on a P3A. Im starting to wonder a little. I wont have the money to just go replacing it should it fall from the sky.

    Probably wont be flying over water (even though they are some of the best shots), but still.
     
  10. jasonb777

    Joined:
    Jul 26, 2014
    Messages:
    411
    Likes Received:
    47
    Location:
    Jacksonville n.c.
    uhh, Every time I come to this forum, I see someone has a suicide phantom. I'm kind of nervous to fly now seeing the dozens of lost phantoms in the last couple months. I say its either the battery firmware, or the craft firmware.:confused:
     
  11. Blue Bird

    Joined:
    Jun 11, 2015
    Messages:
    615
    Likes Received:
    159
    Location:
    Dade County, Florida
    Either a sudden magnetic interference accrued with in the area you were flying in or sudden failure of the compass itself. Sorry for your loss.
     
  12. KyleMaxxUAV

    Approved Vendor

    Joined:
    Jan 4, 2016
    Messages:
    1,113
    Likes Received:
    313
    Anyone know if it had new or old style motors ??


    Sent from my iPad using PhantomPilots mobile app
     
  13. With The Birds

    Joined:
    Jan 4, 2016
    Messages:
    2,620
    Likes Received:
    751
    Location:
    Australia
    According to healthy drones you were in ATTI mode before take off and at 2.2m altitude just before loosing her (within VPS operating distance). Loss of compass and relying on VPS over water may be the issue. Sorry about your loss.
     
  14. With The Birds

    Joined:
    Jan 4, 2016
    Messages:
    2,620
    Likes Received:
    751
    Location:
    Australia
    Im just thinking, without GPS and teliable compass dara could the phantom have read the VPS data over the moving water to think it was moving and in the absence of control input from you throttled up to try and stop moving and tipped over?
     
    rickray likes this.
  15. rickray

    Joined:
    Jun 2, 2015
    Messages:
    67
    Likes Received:
    58
    Location:
    Ventura, CA
    A few things to answer here.

    I did a normal calibration just prior to takeoff. It showed normal and ready to fly. I have calibrated and been denied in the past due to electromagnetic interference. It didn't happen this time.

    Why did it take off in ATTI mode? Does loss of compass throw it to ATTI automatically? I don't even know how to intentionally put it into ATTI on the P3 while in flight. How would someone do that?

    To those who are scared, I've had many many flights over water without incident. The P3P is a joy to fly. This crash unnerved me as I was literally doing nothing, flying slowly in an open rural area. But it will not stop me from owning one again. I'm addicted.

    What do people think my chances are of getting a replacement from DJI given the flight log?
     
    richardtomcat likes this.
  16. snerd

    Joined:
    May 5, 2015
    Messages:
    2,633
    Likes Received:
    1,585
    Location:
    Oklahoma
    No idea here. But I would get a ticket opened up with them asap. Call, explain, hopefully get the data file accepted. Might be a total refund, 30% off another, or nada. Won't know until you contact them.
     
  17. snerd

    Joined:
    May 5, 2015
    Messages:
    2,633
    Likes Received:
    1,585
    Location:
    Oklahoma
    Oh! And condolences on the loss! That has to be gut-wrenching.
     
  18. Helijoc

    Joined:
    Nov 28, 2015
    Messages:
    186
    Likes Received:
    61
    I had mine go into ATTI the last flight. Could we be dealing with sun flares? Remember hearing about increased sun flares at the end of the year.
     
  19. With The Birds

    Joined:
    Jan 4, 2016
    Messages:
    2,620
    Likes Received:
    751
    Location:
    Australia
    Im keen to hear from those whi can possibly draw more out of the log file. Accorfing to it GPS was all good start to finish.... RICKray you said tou werent sure how to manually get into ATTI in flight, is the flight mode switch on the remote in GPS atm?
     
  20. Reed L

    Joined:
    Sep 13, 2015
    Messages:
    1,274
    Likes Received:
    391
    Location:
    Alta, Ca.
    Atti is the center position on the left index finger switch on the rc but... It went into atti and you have never flown in atti before today? Unfortunately that may have caused the accident. When it went into atti at that height did you move the left stick forward and try to take it up? When it goes into atti on me, the first thing I do is gain altitude.