Posted on 11/18/2001 4:01:03 AM PST by vrwc54
Edited on 09/03/2002 4:49:34 AM PDT by Jim Robinson. [history]
Nearly a week after last Monday's accident, the National Transportation Safety Board has all but ruled out terrorism as its cause.
If the Post is correct, I find it very disturbing that, just five days after the crash, the NTSB would categorically rule out a major area of investigation for the unexplained failure of a major airframe component. Particularly since, as recently as two days ago, the investigative agency hadn't even put together a timeline of the accident, overlaying the voice and data recorder information.
(Excerpt) Read more at airdisaster.com ...
Beyond timing, circumstance and eye-witness observations, there IS NO defitinitive evidence pointing to sabotage by 'terrorists'. There is, however, considerable, verifiable evidence of a normal take off, a normal turn, an encounter with a strong wake, a second wake encounter, sudden lateral acceleration (odd in flight) loss of control, destruction of the airframe in the air by shearing forces, and loss of the aircraft by impact and fire.
While I accept the emotional response to point to terrorism, I have yet to see evidence of it, beyond the testimony of eye witnesses who saw and heard 587 in its death throes. As a hobby I work with 'eye witnesses' at amateur and pro road races who must write up what they observed (as they work as race track safety officials and are TASKED WITH watching the race) when there is an accident on the track. I would tell you that unless the various folks confer, that the eye witness reports seldom match, even when the incident happens on the turn right in front of them. Nobody is lying, it's just the way the human mind processes fast-acting events and images. If the EVIDENCE does not match the eye witness testimony (like "he hit him hard in the right rear fender", but the left rear is damaged) then you must discount the testimony.
Point is, in summary, the physical and digital evidence do NOT indicate an explosion as the initiator. There would likely be fires as the plane tore itself apart.
Flame away if you must, but present verifiable evidence with your position. Res ipsa loquitor.
Don't you think, though, that the A300 series should be grounded?
The tail is not supposed to fall off.
To your point, I do not fly Airbus equipment domestically, 'cuz I have choices. Also 'cuz I used to work for Lockheed, and 'know better' than to fly on first generation, ripped-off designs.
When this is all said and done, it's gonna point to Airbus Industries, because American Airlines will be able to point out they complied with all the ADs, and the tail (and engines!) still separated from the airframe under aerodynamic stress.
Eyewitnesses have spoken of their horror at seeing an Airbus A300 crash into a residential area of New York. Witnesses reported seeing a fire or explosion on one side of the aircraft as an engine fell off.Ethan Moses said he had seen the plane climbing in the sky after take-off.
It was travelling to the left slightly and then it just nose dived straight down
The wing appeared to separate from the rest of the plane, which veered to the left and then plunged into a nose dive, he said.
"It was travelling to the left slightly and then it just nose dived straight down," Mr Moses said, adding that fire spread on the ground, moving from house to house within seconds.
David Solero was driving over a bridge by Rockaway when he saw fire on the left hand side of the plane.
He told CNN: "We looked up and saw the fire coming from the left hand side - it could have been an explosion."
Other witnesses told reporters that the fire or explosion was on the right hand side of the plane.
Mr Solero added: "It could have been the engine was on fire.
I was scared it was going to veer towards us and hit us - we stopped dead in our tracks
"I was scared it was going to veer towards us and hit us - we stopped dead in our tracks.
"We saw something fly off the plane."
It's when people read these eye witness reports and then infer TERRORISM o their own that I get hostile.
Agreed
There's very little chance that wake turbulence caused the motion described. Wake turbulence can be a jolt, or series of jolts, not an airframe rattle.
Agreed. The airframe rattle was the VS/rudder beginning its failure
The rudder movement is also wrong for wake turbulence. A direction change would be a function of a wing dropping, with corrective aileron input, not a rudder deflection.
While absolutely admitting I have never piloted a swept wing jet, turbine driver friends of mine tell me that roll can be countered with rudder, and vice versa, rudder causes some roll in a swept wing jet.
The "yaw damper" may cause approximately a 3-degree rudder deflection, but nothing that radical.Flutter in the rudder or deflection of the VS may be the culprit
As described, the side load sounds radically more like rudder movement than wake turbulence. The comment about the wake turbulence sounds like pilot speculation. I'm also curious why the copilot has been identified, but not the captain - that I've heard.Co-pilot was PIC on take off and departure
I agree. I am still leaning toward an accident but I smell a rat.
I believe it could be terrorism.
At this point, the verifiable evidence points to other causes.
BUT, terrorism is not to be ruled out yet, just put way down the list.
Actually, air would exert equal pressure over the surface of the VS. It would not be damaged like a hammer struck it.
The VS was pushed (not pulled) off the empennage by airpressure. Air pressure could do that because the attachment points were weak.(<-- hypothesis)
Were they weakened by a bomb? Not likely at this point. Were they already weak? Probably. What caused the airplane to get so sideways that the VS could be pushed/snapped off? Therein lies the real debate: pilot error, explosion, wake turbulence, rudder flutter, or the VS just fell off in wind shear.
FReegards,
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