[Mr. K]

There was VIDEO SHOWN ON TV OF THE MISSILE GOIN UP TO THE PLANE - I KNOW BECAUSE I SAW IT

It was removed after th first showing and neve shown again.

[tennmountainman]

The 911 Commission, like the Hillary investigation were both whitewashed.

Only little people get punished for criminal activity.

The DC elites protect themselves.

[PROCON]

We need the FBI to take up this investigation to finally get to the truth. </sarc>

[longfellow]

Steponallofus said it was bombed. Before the official word.

[marron]

Gorelick is the ultimate fixer. Her name pops up again and again in key events. TWA 800, OKC bombing, Fannie Mae, BP oil spill. And of course the 911 Commission.

[Moonman62]

By roughly 9 p.m. Richard Clarke, chairman of the Coordinating Security Group (CSG) on terrorism, had called a meeting of the CSG in the White House Situation Room. The meeting was prompted in no small part by the news out of New York TRACON that “a primary radar return (ASR-9) indicated vertical movement intersecting TWA 800.”

...

My understanding is that civilian primary radar returns don’t contain altitude data. That’s why aircraft have transponders.

[Lonesome in Massachussets]

The meeting was prompted in no small part by the news out of New York TRACON that “a primary radar return (ASR-9) indicated vertical movement intersecting TWA 800.”

ASR-9 primary radar is 2D. It gives range and bearing, with a range accuracy of about 150 meters (500 feet) and bearing accuracy of about 1.4 (360/256) degrees. It does not give height information. It has an instrumented range of 60 nautical miles (111 km, 69 statute miles).

ASR-9 Antenna with SSR (Transponder) Antenna Mounted Above Primary

The garage door size assembly in the picture is the reflector for the ASR-9 ASR. The picket fence on top is the SSR (Secondary Surveillance Radar) antenna. The SSR has about the same range resolution as the ASR, but receives a reply from an instrumented aircraft's transponder (a radio receiver and transmitter) containing the target aircraft's altitude and identifying information. The only way air traffic control can know an aircraft's altitude is from secondary radar altitude replies.

By the time of incident, the plane was well beyond the range of the ASR-9 at Kennedy, and probably not in range of Logan. (It would have been within range of the ARSR-4 (Air Route Surveillance Radar, range of 250 nautical miles) at Marconi Station on Cape Cod, and New York, also a 2D radar.