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Topic: The NTSB Concludes Probable Cause for US Airways 1549

On May 4th, the National Transportation Safety Board, the US agency charged with investigating major transportation accidents, held a Public Meeting on the US Airways flight that dithced into the Hudson river over a year ago. The NTSB determined that. . .

". . . probable cause of this accident was the ingestion of large birds into each engine, which resulted in an almost total loss of thrust in both engines and the subsequent ditching on the Hudson River. Contributing to the fuselage damage and resulting unavailability of the aft slide/rafts were (1) the Federal Aviation Administration

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2 Reply by Einstein (edited by [TI] Primo 14-May-2010 09:20:14)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

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Everything bad in the economy is now Obama's fault. Every job lost, all the debt, all the lost retirement funds. All Obama. Are you happy now? We all get to blame Obama!
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3 Reply by ..Nemeara.. (edited by [TI] Primo 14-May-2010 09:21:13)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

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till the end of time..

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4 Reply by The Yell (edited by [TI] Primo 14-May-2010 09:21:26)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

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The core joke of Hitchhiker's Guide to the Galaxy is that of course no civilization would develop personal computers with instant remote database recovery, and then waste this technology to find good drinks.
Steve Jobs has ruined this joke.

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Re: The NTSB Concludes Probable Cause for US Airways 1549

i don't understand how a bird going through each engine blew them out. engines are tested at manufacture by shooting frozen chickens through them using a huge highpressure air cannon. surely a living (and therefore infinitely more squishy) bird couldn't do any damage if that doesnt

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Re: The NTSB Concludes Probable Cause for US Airways 1549

and yes, i do know what i'm on about here. worked in the aerospace industry for several years, our customers were pretty much every company in the UK that manufactures parts for Rolls-Royce, Airbus and Westland Helicopters.

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Re: The NTSB Concludes Probable Cause for US Airways 1549

@Walking_Corpse

The NTSB said:

"8. The size and number of the birds ingested by the accident engines well exceeded the current bird-ingestion certification standards.

9. The current small and medium flocking bird tests required by 14 Code of Federal Regulations 33.76(c) would provide a more stringent test of the turbofan engine core resistance to bird ingestion if the lowest expected fan speed for the minimum climb rate were used instead of 100-percent fan speed because it would allow a larger portion of the bird mass to enter the engine core.

10. Additional considerations need to be addressed related to the current 14 Code of Federal Regulations 33.76(d) large flocking bird certification test standards because they do not require large flocking bird tests on smaller transport-category airplane engines, such as the accident engine, or a test of the engine core; the circumstances of the accident demonstrate that large birds can be ingested into the core of small engines and cause significant damage."

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8 Reply by The Yell (edited by [TI] Primo 14-May-2010 09:22:14)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

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The core joke of Hitchhiker's Guide to the Galaxy is that of course no civilization would develop personal computers with instant remote database recovery, and then waste this technology to find good drinks.
Steve Jobs has ruined this joke.

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9 Reply by Acolyte (edited by Acolyte 11-May-2010 22:09:41)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

Lol, there is a lot of research into, uh, "counter-avian" strategies. Such as an "avian radar" that can warn towers of birds in the vicinity of areas of low-flying operations. Other ideas include pulsating lights on aircraft which supposedly scares birds (I've tried this with my high-beams, I wasn't impressed). They're also a good idea for increasing your visibility to other pilots.

P.S. I thought the term "large flocking birds" was a rather appropriate choice of phraseology by the NTSB.

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Re: The NTSB Concludes Probable Cause for US Airways 1549

In Portland aka PDX for you pilots, they had a guy with a shotgun who fired fireworks to scare birds away.

Probably not so helpful for birds already in flight however.

What you need is a squadron of 'interceptors' to scare the birds away maybe?


Also would noise help? Some ultra frequency only birds can hear?

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11 Reply by Walking Corpse (edited by [TI] Primo 14-May-2010 09:23:32)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

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Re: The NTSB Concludes Probable Cause for US Airways 1549

Or just use an hawk, like many aeroports do...

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Re: The NTSB Concludes Probable Cause for US Airways 1549

I would love that job.... yikes


But seriously that works? I see small birds chasing big birds all the time, quite a show to watch 3 sparrows chase a hawk off...

Everything bad in the economy is now Obama's fault. Every job lost, all the debt, all the lost retirement funds. All Obama. Are you happy now? We all get to blame Obama!
Kemp currently not being responded to until he makes CONCISE posts.
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14 Reply by Freelancer (edited by Freelancer 14-May-2010 10:45:57)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

Yup it does.. really well if your area is full of pigeons and other small birds. Did i bit of research, it can also be called falcon in North America... But like Walking_Corpse said, the engines are design to support this accidents, but since the solution to use hawks it's cheap, alot of aeroports have them.

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Re: The NTSB Concludes Probable Cause for US Airways 1549

I've heard of border collies being trained for the same purposes.

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16 Reply by The Yell (edited by [TI] Primo 14-May-2010 09:23:53)

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Re: The NTSB Concludes Probable Cause for US Airways 1549

[]

The core joke of Hitchhiker's Guide to the Galaxy is that of course no civilization would develop personal computers with instant remote database recovery, and then waste this technology to find good drinks.
Steve Jobs has ruined this joke.

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Re: The NTSB Concludes Probable Cause for US Airways 1549

The clever folks at Jeppesen, who publish aeronautical charts and offer many other navigational services, made a humorous approach plate in honor of this event. You really have to see it to appreciate it.

http://www.jeppesen.com/images/misc/hudson-miracle-approach-chart.jpg

Intersections are named after members of the flight and cabin crews, and it even lists their experience in the industry. Apparently the joke charts were handed out at the auction during the recent EAA Oshkosh, the famous air convention in Wisconsin. This is definitely a collector item I intend to pursue.

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Re: The NTSB Concludes Probable Cause for US Airways 1549

http://www.youtube.com/watch?v=cgpQBZF2sZQ

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Re: The NTSB Concludes Probable Cause for US Airways 1549

> Einstein wrote:

> I would love that job.... yikes


But seriously that works? I see small birds chasing big birds all the time, quite a show to watch 3 sparrows chase a hawk off...

of course it works, except maybe close to their nests. even little birds make kamikaze attacks to chase off threats to their nests

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Re: The NTSB Concludes Probable Cause for US Airways 1549

@East

It works as long as you keep chasing them until they find someplace else to settle. It often takes up to three weeks to a month to clear a flock from one location using a combination of birds of prey, pyrotechnics, and canines. Other innovations in the counter-avian business include high-intensity strobe lighting and special radars designed to detect flocks of birds.

Bird strikes are actually far more common than you might think, yet most do not end in such tragedy and rarely do they ever cause a multiple engine failure. Just search "bird strike" on the Aviation Herald, an independent website that reports on accidents and incidents in commercial aviation, and you might be surprised by the frequency of "avian collisions."

http://avherald.com/h?search_term=%22bird+strike%22&opt=0&dosearch=1&search.x=0&search.y=0

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