On the night of July 17, 1996 TWA Flight 800 exploded and crashed
off the coast of Long Island, killing everyone on board. For months,
investigators focused on three possible causes--- a bomb, mechanical
failure, or a terrorist missile. While the NTSB eventually concluded
that the jet had exploded due to mechanical failure, as far as many
people are concerned, what truly happened remains a mystery.
According to most authorities, TWA Flight 800 crashed, because its
nearly empty center fuel tank exploded.
The center tank lies at the heart of the 747's structure, embedded
among the spars that support its wings and resting atop the keel beam
that runs along its belly. When Flight 800's center tank exploded,
it broke two of the wings' three spars and led to the fracture of
the keel beam. After that, the forward fuselage failed and was ripped
from the aircraft, which then disintegrated, plunging into the Atlantic
Ocean off Long Island, N.Y. All 230 on board were killed.
Some of the theories on why the tank exploded include:
1. Static electricity: Sloshing or leaking fuel builds up a static
charge, causing a deadly spark. NTSB's pick.
2. Fuel-probe residue: Mineral deposits on a fuel-level monitor
reach dangerous temperatures, igniting the fuel.
3. "Shaped charge": A large bomb has been ruled out,
but small explosives planted on the center fuel tank could have
caused the blast.
4. Chafing wires: FAA's favorite. Rubbing wires near wing tank
start a fire that blows back through vapor vent system to the center
tank.
5. Meteors: "Space junk," possibly small meteors or missile
fragments, hits the jet. The least likely cause.
6. Scavenge pump: A pump that bails fuel residue from the center
tank overheats, touching off hot vapors.
OTHER THEORIES:
1. Friendly fire: TWA flight 800 was supposedly flying through
the airspace near to where the Navy was firing ground (ship) based
missiles at drone craft. The missile hit TWA by accident, resulting
in an elaborate conspiracy/cover-up by the Navy, F.B.I., etc. Pierre
Salinger backed this theory, getting in mucho trouble/controversy
as a result.
2. Terrorists (American or foreign) fired a ground based missile
at flight 800, blowing it up.
More than thirty witnesses claim to have seen an object rising up
toward and colliding with Flight 800, prior to the 747's explosion,
the kind of visual a friendly fire or terrorist missile launch might
have created.
The F.B.I., the Navy, the NTSB, and others, have vigorously denied
the terrorist missile or "friendly fire" theories. Many
American, including relatives of those killed in the Flight 800 explosion,
support these theories.
YET ANOTHER THEORY:
National Transportation Safety Board lead investigator Bernard
Loeb has an additional POSSIBLE theory. A small crack in the center
fuel tank may have caused leaking fuel particles to form a cloud,
which then discharged a deadly electric spark. He's been unable
to prove this theory, so far.
Data Sources include The New York Times
Magazine (November 12, 1996), Aviation Week & Space Technology
(July 29, 1996), Newsweek (November 25, 1996, July 21, 1997), Aviation
Week & Space Technology (March 10, 1997, May 12, 1997, June 2,
1997).