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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Major Plane Crash in New York
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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 11-13-2001 09:43 AM
Many years ago when traveling through JFK airport, I found it interesting (and somewhat disturbing) that they shot off cannons every few minutes to scare the birds from the runway areas. Wonder if some large birds ingested by an engine were a factor. Let's hope the investigation pinpoints the cause. If the "dumping fuel" story is correct, it means the pilots had some time to react to the crisis. As I recall, a fully fueled jumbo jet ("Heavy") cannot land safely without dumping some fuel to lighten the load on the landing gear. Fuel would also be dumped prior to an emergency/crash landing to lessen the impact of any fire. Link to NTSB Investigations: http://www.ntsb.gov/aviation/aviation.htm ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243 E-Mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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Will Kutler
Phenomenal Film Handler

Posts: 1506
From: Tucson, AZ, USA
Registered: Feb 2001
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posted 11-13-2001 02:03 PM
John P--you are our newest aircraft mechanic!  This morning there was a newsbrief about possible FOD (Foreign Object Damage)--and it was said that it may have been birds. In order for an aircraft engine to be FAA certified--it must be able to ingest a given pound bird without crapping out. Many of these tests were conducted by using grocery store chickens. This also goes for certifying windows--a certain lb bird shot at a window at such a velocity at so many mph w/o breaking. About aircraft weight. Yes John, if an aircraft has too much fuel on board prior to landing the landing gear may be damaged from an overweight landing--and if this happens special inspections are performed. But to prevent this from happening, the aircraft can dump its excess fuel over designated areas. All equipment on aircraft are monitored by hrs of operation and weight. An airframe is only rated for x number of hours and/or x cycles; a cycle being each time an airframe is pressurized and depressurized.
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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 11-13-2001 03:51 PM
A close Kodak friend was killed in the American Airlines DC-10 crash in Chicago in May 1979, as he was flying back to Los Angeles after motion-picture engineering meetings in Rochester. Recall in that case, an engine fell off the plane during takeoff due to sheared pylon mounting bolts damaged during improper maintenance procedures, and severely damaged the controls, such that the plane pitched over and crashed.  ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243 E-Mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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Will Kutler
Phenomenal Film Handler

Posts: 1506
From: Tucson, AZ, USA
Registered: Feb 2001
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posted 11-13-2001 06:30 PM
Believe it or not John, there are usually around 3 bolts that hold an engine onto the aircraft and just a few bolts holding the wing onto the fuselage! These are very special fastners that are inspected and possibly replaced at given intervals. You would your pants if you watched a propellor under a strobe light!  Yes, there is quality maintenance and half assed stuff. Aviation maintenance in the military is different from civilian maintenance. Military maintenance is "task oriented"--the mechanic does not necessarily need to "understand" all the in and outs of a particular system--but they must know how to inspect and troubleshoot/repair according to given procedures. A military mechanic can "ground" an aircraft. A civilian A & P can legally work on all aspects of the aircraft, the exceptions being propellors and instruments. Unlike the military mechanic, the civilian mechanics must know the ins and outs of each system and what makes each individual component tick! Unlike the military mechanic, the civilian mechanic cannot legally ground an aircraft--but the aircraft status is recorded in the logbook by the mechanic. So, if an civilian mechanic deems an aircraft unairworthy, the pilot can still take the responsibility to fly it. Yes, there have been cases of aircraft owners/pilots trying to bribe mechanics! I do have a nice "list" of maintenance horror stories from both the military and civilian world!
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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 11-15-2001 07:39 AM
Recent reports indicate both engines were still running normally when the pilots were reacting to "turbulence". No evidence of bird damage or internal engine disintegration. No explosion was heard on the cockpit voice recorder. The video of the tail section recovered from the water shows the tail section intact, with no punctures, and "cleanly" separated from the rest of the plane at the point of attachment. The very same aircraft was hit by severe air turbulence in 1994, injuring 46 passengers and maybe stressing the airframe. http://www.cnn.com/2001/US/11/14/new.york.crash/index.html Many also thought (and a few still think) TWA 800 was brought down by an errant missle, but the NTSB report presented convincing evidence that fuel vapors in the center wing fuel tank exploded: http://www.ntsb.gov/events/TWA800/default.htm ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243 E-Mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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Bob Maar
(Maar stands for Maartini)

Posts: 28608
From: New York City & Newport, RI
Registered: Feb 2001
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posted 11-15-2001 09:10 AM
Flight 587 took off 105 seconds after JAL(Japan Air Lines) 747 which normally would be 120 seconds.Distance between the planes was 800 Feet. FAA Standard is 1000 Feet. AA587 was flying at 2800 feet when it entered the wake of JAL 747. Flight 587 picked up speed and closed the gap on JAL 747 to 90 seconds. Planes were 4.3 miles apart. (FAA Standard 5 miles.) Wake Turbalance: A spinning mass of air, originating from wingtips of a heavy large airliner (e.g.747) trailling backwards. Some air will circulate causing "rolling effect" to take place behind wingtips. Two Vortices develop, one from each wing develop. Heavy airlines give off most intense vortices. An airliner, with a shorter wingspan and lighter weight, trailing a "heavy", should be alert to possibility of wake turbulance. May cause following aircraft to enter an "unusual attitude: of which recovery is doubtful. It seems fairly clear from eyewitnesses who saw plane begin to spin, watched as engine fell to ground, plane took a nosedive into Belle Harbor. There is no way it could have been a missle. This plane just came apart.
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John Schulien
Expert Film Handler

Posts: 206
From: Chicago, IL, USA
Registered: Nov 1999
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posted 11-15-2001 02:18 PM
Sobering article on the Debka site."According to DEBKAfile?s intelligence sources, a number of people linked to Al Qaeda in New York behaved suspiciously several hours before the crash; some, who were under surveillance following the September 11 attacks, managed to disappear, with the FBI unable to determine how they slipped away or trace their current whereabouts. Those sources also noted that the US F-15 warplanes, on 24-hour patrol in the skies of New York and other major US cities, were ordered immediately after the crash to search for any boats or unusual activity in the Jamaica nature reserve. I certainly hope that this plane wasn't shot down. It's something I've been fearing all along. My house is near a major airport, and I'm keenly aware of the fixed departure and approach patterns that airports employ. Every one to two minutes, all day, a jetliner flies directly down the East-West street a block North of my house, on approach to the airport. There's another landing approach pattern, about one mile North, and still another a mile North of that. The planes fly the same routes, all day. We can set up the best airport security in the world (although we are pathetically far from that), but the odds are that the next attack won't be by hijaakers -- it wouldn't work anymore. The hijaakings only worked the first time because of the element of surprise -- Hijackers are supposed to demand money and a flight to Cuba -- not take over the controls and crash the plane into a building! Every time someone has gotten out of control in a plane since 9/11, not only have the crew and/or passengers stopped them, but military jets have intercepted the planes within minutes. There's no purpose in hijaaking a plane in order to crash it, when the odds are you won't be successful in taking the plane, and even if you do, there's no way you're going to get your plane to any worthwhile target. But a van full of stingers would be a different story. A single person could take down a dozen planes in a matter of minutes. Pick a landing or takeoff path over a major city, and you have instant multiple disasters. Launch the attack simultaneously at a dozen or so airports, and who would ever feel safe boarding an airplane again? And to top it off, there's rumors flying about a new wave of attacks starting on the 17th. Right before the thanksgiving travel rush. You know you're in dark times when a plane crashes, killing 250+ travellers, and all you can think of is "thank god it's JUST a mechanical failure ..."
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Aaron Sisemore
Flaming Ribs beat Reeses Peanut Butter Cups any day!

Posts: 3061
From: Rockwall TX USA
Registered: Sep 1999
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posted 11-15-2001 04:32 PM
Stingers, and most other missiles would have left a telltale smoke or vapor trail upon firing, and as of now there have been NO witnesses that have seen such a trail.Also, if it were terrorists, wouldn't hitting a 747 or DC-10 be a better bang-for-the-buck 'headline-grabber' than an Airbus? -Aaron
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