NTSB Briefing, NTSB claiming .3 to .8 g wake encounter caused crash?!?!?!

CNN | 11/15/2001 | me

[The Magical Mischief Tour]

This is Bull $h!t!!!

The NTSB is LYING like rugs!!!

NTSB dude just claimed that .3 to .8 g's encountered during the wake encounter caused the Airbus to break up in flight...

Even a male reported asked "is this even possible".

"Isn't this normal bumping encountered when flying?"

Even the media don't believe them!!!!!

[Digger]

No it doesn't matter which party is in charge because it's the "Two-party Cartel". The elites just hire the puppet that they want for this election cycle & if he goes along with the program they will extend it. Why do you think that a Reagan or a Buchanan is so vilified? Because they were not controlled by them.

[Blueflag]

With all due respect, .3 - .8 lateral G's is far from a slam. Consider that lying on your side in bed, you experience 1G of lateral force.

[Map Kernow]

but the evidence looks like the composit brackets that secure the vertical stabelizer to the airframe, were repaired once a couple of years ago FAILED-PERIOD

And that caused the explosion by the engine that eyewitnesses saw? BTW, what's your source for your repair assertion?

[Daus]

I expect now i'll be flamed as a gubbmnt sympathizer.

:) Yep. Don't you know OBL himself was out on the tail pushing the stabalizer back and forth until it cleanly snapped? Get with the program!

[Fred25]

Sounds like a defective plastic airplane, held together by glue.

[LTCJ]

Transport category aircraft are certified to +2.5g / -1.5g vertical g's minimum.

[maggie]

I just read in a report somewhere that the engines were still running AFTER they lost control. I wonder if that helps prove or disprove wake encounter as being a problem.

[contessa machiaveli]

i didn't realize planes were so fragile. wings falling off? please.i'm not sure which is worse...an act of terrorism or planes seemingly made of cardboard. this has been "solved" a bit too fast for me.

[John W]

That actually happened prior to delivery in 1988,didn't it?Seeing as how we want to be precise about everything and not mislead folks.

[justlurking]

for reference, when you SCUBA dive to 33 feet depth, you are experiencing one full additional earth gravity in the from of the pressure exerted by the weight of the water on your body.

No, that's pressure. At 33 feet, you experience an additional "standard atmosphere" (14.7 psi) of pressure, but since it exerted everywhere on your body, it isn't manifested as "gravity".

Gravity is acceleration (32 feet/second per second), the result of an attractive force between two masses -- in this case, you and the earth. Yes, I know the explanation is more complicated than that, but that's the "Gravity for Dummies" version. :-)

[.38sw]

Yeah, well I don't think I want to be getting on any Airbuses anytime soon. I'm also uncomfortable on 737's, having heard some nervous making stuff about their rudders.

[Steve_Seattle]

"they are trying to keep alive the American airplane industry"

Claiming that an airliner fell apart because of buffeting from the wake of another plane 6 miles away is going to reassure the public about flying?

[rwfromkansas]

If there is a coverup, it is to keep our economy from tanking completely and the airlines to go out of business. Frankly, this is a virtuous coverup. Compare this to OKC et al, where Clinton covered up to advance his career.

[.38sw]

I missed the briefing!

[eno_]

if it had been properly bolted down.

It was reported the tail broke off above the attachment points, with the carbon fiber comoposite looking like "wheat." That stuff is massively strong. Take an old carbon fiber composite tennis raquet and try to break it. Good luck! 0.8g force? That's 20% less than you are stressing your butt right this minute, and it's not held on with carbon fiber. Something is not right. But what?

[jpthomas]

It took hours for the oscillations to build up in the bridge to the point of failure. However, flutter is a known and real phenomenon in aerodynamics -- wings and tails have fallen off of a/c, especially on initial test flights, and especially in the 1930s and 40s before the phenomenon was better understood.

Why would it take seconds vice hours for the oscillations to build up to the point of failure? Because the resonant frequencies of a "bridge" and an "a/c tail" are very different, as are the loads required to stimulate them.

Regarding the structural point of failure, I have heard that the bolts holding the tail in place were found still in place on the fuselage. What failed were the fastening points on the tail structure to which the bolts are attached.

[rolling_stone]

Reportedly this plane had experience damage several years ago and speculation is that it was not checked or repaired properly, allowing the relatively small turbulence to cause the material to fail...in other words a normal plane would not suffer the same damage....

[KQQL]

But a final determination on the cause could still be a year off, investigators cautioned.

The Govt just told us to shut up and fly.

Composite materials started being used for major structural parts in commercial jets in the late 1970s and early '80s. Black said there haven't been any problems with the material, "but then we also haven't lost any tails."

You know what folks, if this crash happened anywhere but NYC , I might have believed in NTSB's crap about G forces etc.

[hankbrown]

I agree. If this is so very possible -- how come it has never happened before? I realize there is a first time for everything - but wake and connector? Seems like a fairly common event (wake) and mechanical situation (loose connectors).

[Howie]

When lying on my bed I experience 1 g positive. If an earth quake shakes the bed sideways I will experience some lateral g's. If you weigh 200 lbs and were in the airliner and got a .8 side gust it would shove you into the side of your seat with a force of 160 lbs. that would get your attention!.