Heavysledz
lvl.4
Flight distance : 819491 ft
United States
Offline
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I will simply reply to your comments and then let this one go as to not further beat an already "dead horse":
1) he is not "upset with DJI" nor blaming them - It sure sounds like he or possibly you are blaming DJI indirectly by saying the software and/or hardware sucks.
2) he did not lose VLOS. Where he was positioned he could see the drone when it disconnected. How else do you think he knew where it went down and was able to retrieve it? - It was stated earlier that it was on a direct path back to the RTH position, I assumed the pilot was still standing in the same general location as when he took off and the RTH fix was made. If this was the case it would be safe to assume that if it was flying directly at the building that the pilot could not see the drone (thru the building directly in it's path). If my assumption is incorrect, and the pilot was in a different location, then I stand corrected.
3) downtown at dusk is not populated. There were no people below. - again, another assumption as most cities have people on the streets at this time of day....very odd that this is not the case in this particular city.
4) he was not flying his drone above 400 feet (the building is 600 feet tall and as you can see in the video it was nowhere near the top) - by default, if you are flying in a location such as a city that has tall buildings, you should assume that the pilot would set his RTH altitude higher than the tallest building. This would then put you above the legal altitude of 400ft. Yes, the rule is 400ft above the ground or structure, but when a RTH is executed, it goes to the RTH altitude first then flies back to the RTH location. This would put the drone at an illegal altitude for a large majority of the flight back to the RTH position. Again, one would assume the pilot did not have an appropriate RTH altitude set for the flight conditions based on the video since it did not attempt to climb to an altitude higher than the building which would have prevented it from crashing into the building in the first place.
5) it is not illegal or restricted airspace to fly where he was flying - by default, flying in a city, you are likely to break some FAA regulations: flying over 400ft (even if it is during a RTH command), flying above groups of people (common on most city streets), flying beyond LOS (assuming at some point the flight would take the mavic out of physical line of site due to a building blocking the pilots view etc.....
Obstacle avoidance can see the sun and water, but can't see a building because it has windows? LOL! - Does OA see the sun every time it looks directly into it....no. Does the OA see the water every time you fly over it.....absolutely not. That is why the manual specifically mentions taking extreme caution when flying over water and is suggested to turn off the VPS when flying over water due to the high likelihood of erratic behavior. Also, you stated he was flying at dusk. The manual clearly states that the OA and VPS will not work properly in low light or extreme light conditions.....I think dusk would fall into the low light category. |
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