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Air Ambulance B300 accident Laguna, PI 1 Sept 2019
https://aviation-safety.net/database...?id=20190901-0
https://news.abs-cbn.com/video/news/...rash-in-laguna Video of the final seconds of the flight of the KingAir 350 has come to light from two aspects, It appears clearly that the outer wing sections have separated in flight. Vapour coming from both sides of the foreshortened wings is likely fuel escaping from the tanks outboard of the engine. One report indicates the accident occurred at a time of heavy local rain. refer to video from ANCNEWS at time 1:02/2:58, and 1:51-1:53/2:58 Take care out there, a good many thunderstorms will challenge the structure of aircraft either directly or from the consequences of loss of control and recovery. Hopefully this will be investigated promptly and causation will come to light, but losing wings in flight symmetrically comes from a handful of causes. |
https://cimg1.ibsrv.net/gimg/pprune....250e8df4f9.png
The right wing in one piece, photographed earlier this year by the surgeon on the accident flight |
there are 4 big bolts that hold that outer wing panel on, and these have never failed, the structure around the fittings gets torn away by excessive G loading, or it on one occasion in Australia failed due to fatigue fractures due to extreme service operations
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Originally Posted by fdr
(Post 10562584)
https://aviation-safety.net/database...?id=20190901-0
https://news.abs-cbn.com/video/news/...rash-in-laguna https://www.youtube.com/watch?v=V3hczOuNoKY https://www.youtube.com/watch?v=pcLWYuLWuWM Video of the final seconds of the flight of the KingAir 350 has come to light from two aspects, It appears clearly that the outer wing sections have separated in flight. Vapour coming from both sides of the foreshortened wings is likely fuel escaping from the tanks outboard of the engine. One report indicates the accident occurred at a time of heavy local rain. refer to video from ANCNEWS at time 1:02/2:58, and 1:51-1:53/2:58 Take care out there, a good many thunderstorms will challenge the structure of aircraft either directly or from the consequences of loss of control and recovery. Hopefully this will be investigated promptly and causation will come to light, but losing wings in flight symmetrically comes from a handful of causes. |
IB57,
I agree. I was once involved in an investigation where a KA had bent wings and the creases in the wings were exactly where the wings in the video appear to have separated. I was unofficially told by someone who should know that when KAs have lost wings after allegedly being over stressed that point is where they tend to go. From my own opinion, and not based on any factual evidence, I believe that it probably takes in excess of 5g to break a KA wing. MM |
Originally Posted by Miles Magister
(Post 10563118)
IB57,
I agree. I was once involved in an investigation where a KA had bent wings and the creases in the wings were exactly where the wings in the video appear to have separated. I was unofficially told by someone who should know that when KAs have lost wings after allegedly being over stressed that point is where they tend to go. From my own opinion, and not based on any factual evidence, I believe that it probably takes in excess of 5g to break a KA wing. MM looking for a static test report I once read that mentioned a bit over 7 |
https://cimg8.ibsrv.net/gimg/pprune....9a7b6539f2.png
the location of the upper wing bolts, |
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