PPRuNe Forums - View Single Post - Russia - Plane crash lands in field after bird strike
Old 18th Aug 2019, 17:12
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UltraFan
 
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Originally Posted by tdracer
Flight, the question remains, is the simple fact that both events have happened with the same engine type meaningful or is it a statistical fluke? Does it point to some a deeper issue with the CFM56-5 bird strike abilities? Do the bird strike cert requirements need to be toughed up?
I don't know the answer to those but here are my 2 cents, for what it's worth. The United 1549 hit at least one goose with each engine. That's roughly 5 kilos of bird per donk. The Ural Airlines 178 hit seagulls. I don't know what happened to the right engine, but I counted seven birds injested by the left one. That's anywhere between 5 and 10 kilograms of meat. And that's, in purely technical terms, A LOT.

If we change the certification requirements, which bird do we take for reference? Swans can weigh over 20 kilos. Even a regular wild turkey has been known to grow to 25-30 kilos. And those are just regular birds that can be found anywhere in the world in big numbers. Then the size of the bird matters. Condors and albatroses have wingspan comparable to light aircraft. How do we provide for that?

I just read someone say there is a huge landfil near ZIA - a feasting spot for all local birds. No idea if it's true, but if it is, maybe there lies the solution.
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