DJI F550 Hexacopter crash after 10 MOST EXPENSIVE SUBMARINES IN THE WORLD 2 months ago   10:55

Stefan Ekstam

I planned to perform a short GPS controlled high altitude flight, going straight up, and then straight down again.

When initating the descent, something did not work out as expected, and less than ten minutes later the hexacopter crashed because the failed descent attempts had drained the battery.

Technical explanation to what actually happened:

The GPS mode prioritized staying in place over descending. The winds were so strong that the engines had to work hard to keep the multirotor in place. When I told the multirotor to descend it basically said "I'm afraid I can't do that, because you told me to stay in this position, and if I slow down the motors to descend, I would also start moving sideways with the wind". The solution was to disengage the GPS mode.

Important background information:

This video depicts a very dangerous situation that could have ended up much worse than it actually did.

I was very lucky not to cause any damage on the ground to either living beings or property.

I am not proud of this particular flight, and my main reason for putting the video on YouTube is to inform others and hopefully help them avoid making the same mistake(s) I did.

My arguments for performing a high altitude flight at all were as follows:
- No airplanes in this area ever fly as low as I did in the video
- There is generally not much air traffic in this area at all
- I checked with before flying
- Military, police, and emergency flights are virtually non-existant in this area
- The multirotor was supposed to go straight up and straight down again

Knowing all of this, I still realize it was a mistake flying that high, especially on this particular occasion. The wind on the ground was not very strong, but higher up, the wind was so strong that the hexacopter had to struggle to stay in position. When I started descending, the hexacopter did not seem to respond to my command, and the only way to make it respond was to disconnect the GPS mode. It then started descending, but it also started moving away with the wind.

Facts to be noted before commenting on the video:

I DO NOT PERFORM HIGH ALTITUDE FLIGHTS ANYMORE, NOR DO I FLY OVER POPULATED AREAS. Hence, it is unnecessary to ask me to stop flying like I did in the video, since it definitely won't happen again anyway. The crash was a harsh wakeup call that totally made me rethink my attitude towards multirotor flying, and I realize now that high altitude flights and flights over populated areas are way too risky and dangerous.

THE MULTIROTOR DID NOT CAUSE ANY DAMAGE ON THE GROUND, TO EITHER PEOPLE, ANIMALS, OR PROPERTY. Having said this, I am fully aware that something disastrous could have happened, and there is no need to keep reminding me about that fact.

I WAS CONFIDENT THAT THE MULTIROTOR WOULD AUTOMATICALLY PERFORM A CONTROLLED LANDING IF THE BATTERY LEVEL REACHED ITS SPECIFIED MINIMUM. After reading the documentation, I felt reassured knowing that I had specified two battery level limits, where the second (lowest) limit, if reached, would initiate a forced automatic landing. Apparently this never happened, so this was either a misunderstanding on my behalf, or unclear documentation, or a combination of both.

Also, I do not live in the US, so the FAA will probably not be too interested in this flight.

My advice to any and all multirotor flyers out there: Never ever take any unnecessary risks. It is never worth it. I got away with it this time, but I could as well have ended up hurting or even killing someone on the ground.

- Frame: DJI F550
- Gyro: DJI Naza v2 with GPS
- Gimbal: DJI Zenmuse H3-2D
- Camera: GoPro Hero3, Black Edition
- Radio: Futaba T14SG with receiver R7008SB
- Battery: Li-Po 4S (14.8V), 6200 mAh
- Motors: Stock F550 (DJI 2212/920)
- Esc: Stock F550 (DJI ESC 30 amps OPTO)
- Propellers: Stock DJI 10"

Comments 18354 Comments

Formula 1st
Well that was dumb
Paul Savage
Luckily you didnt kill anyone and hopefully you learnt your lesson.
Simple Guy
Extract of the ending notes from uploader in the description;
"Also, I do not live in the US, so the FAA will probably not be too interested in this flight.
My advice to any and all multirotor flyers out there: Never ever take any unnecessary risks. It is never worth it. I got away with it this time, but I could as well have ended up hurting or even killing someone on the ground."
Respect! Peace.
alex rimal
This is not safe and stupid you could have caused the death of a lot of people it may be a far stretch but I dont think so - scenario: one day you fly this and it's your bad luck day the drone makes aerial contact with a passenger plane and end up entangling or getting sucked into or crashing into the planes engines or rotors and guess what then the plane crashes and an FAA investigation leads to you.....because you were stupid.
420247365 00001
You flew too close to the Sun and got burnt. Push it to the limit, you lost your wings
Simon Nicklin
''Also, I do not live in the US, so the FAA will probably not be too interested in this flight.'' Wrong. If you live in the UK, The CAA ( Civil Aviation Authority ) would be very interested in this flight. If you don't, then which ever country you are operating this drone WILL BE VERY interested in this flight. Unless you have permission, you are committing a crime where you can expect prosecution for flying an aircraft without any flight plan and permission. It is irresponsible, you could have caused injury and death to persons in the air and or ground. Did it not occur to you that you could have interrupted a flight path of a commercial aircraft or a private flight? Why do you think that aircraft pilots speak to air traffic control? There have been incidents of drones causing a near miss, had you hit an aircraft, at the very least you would have been guilty of mass manslaughter or murder. Is it worth it? You have a responsibility to others when flying these drones... they are not toys. Our Skies are highways in the sky, don't take my word for it. What you did there, was breaking the law.
ron mac
Add 4 jetcat engines
Платон Каплицин
The camera was spinning after the falling because it was rolled on the ground.
F. Teixeira
disable the comments, cancer is what most comments are
great video!!
Alex Notifications
Thank you for posting this, please leave it up.

You are liable for any damage caused by drone. You can also be prosecuted criminally. Manslaughter or criminal negligence, 3-10 years, that’s not at one of the FUN prisons. Brain damage an infant or toddler, millions $$$$. Some people don’t forgive this level of stupidity, could get very REAL.

Next time calculate Kinetic Energy of aircraft: 1/2 mass kilos times the square of terminally velocity in meters/sec = joules. Then have someone hit you in back of head with same energy. Then reevaluate.
Sky_stider223 ??
Looks like a nice place
Juan Manuel Araujo
Ke chingon levanto vuelo y que super putaso a la mierda se fue ups .viva mexico cabrones
Vishwajeet Bhaskar
This is really dangerous for air traffic. Can get crashed with aeroplanes. Such a stupid act .
Sam Sen
And this is my return back in March 2019 to enjoy this wonderful clip, One More Time.
Surprisingly my Subscription was tuned off and not sure if YT does it over time or what. Any how, a good chance to vote you up and Subscribe one more time.
Dearly thank you for your great effort and generosity in sharing this.
Bruce Baumgartner
These things are a nuisance for most if not all areas. Pilots can't see the damn things and they risk our lives as well as a tens of thousands of dollars in our property. Know where you're flying very well.
Rahul Shorya
Con sa brone hai ji
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