TWA Flight 800 took off from New York’s JFK International Airport headed to Paris when it exploded near Long Island on July 17, 1996.
All 230 people aboard were killed.
Of course, terrorism was the first theory. Witnesses claimed they saw a flare or a rocket set off the explosion.
After a four-year investigation, however, the NTSB determined that a fuel tank explosion — sparked by a short circuit in the wiring — caused the crash. The safety board found that witnesses were vague or imprecise in their recollections.
The FBI also conducted an investigation, and it did not find evidence of a crime.