But the documentary asserts that a missile may have exploded adjacent to the plane.
Critics challenge government investigation
Skeptics have long theorized that TWA Flight 800 was brought down by sinister forces.
They include Hank Hughes, who served as a senior accident investigator with the NTSB and helped reconstruct the aircraft. Others include Bob Young, a TWA investigator who participated in the investigation, and Jim Speer, an accident investigator for the Airline Pilots Association.
"These investigators were not allowed to speak to the public or refute any comments made by their superiors and/or NTSB and FBI officials about their work at the time of the official investigation," a news release announcing the documentary said.
"They waited until after retirement to reveal how the official conclusion by the (NTSB) was falsified and lay out their case."
James Kallstrom, who headed the FBI's investigation into the explosion, dismissed suggestions that investigators concealed information and were not receptive to clues.
"If they felt that way back then, they could have come to me," Kallstrom said. "I was someone desiring to get to the bottom of this, believe me. And I had a reputation for not, you know, for not pussyfooting around. Yet it seems like they've comfortably waited until they have their pensions before they became whistle-blowers. So I think it's a bunch of bullcrap."
The documentary, "TWA Flight 800," will premiere July 17, the 17th anniversary of the crash.
Stalcup is co-founder of the Flight 800 Independent Researchers Organization and has been a longtime and passionate critic of the official investigation.
Suspicions that criminals or terrorists were behind the TWA 800 explosion are not new. The FBI conducted a parallel investigation, but concluded that the incident was not a crime or terrorist attack.
The NTSB said Tuesday that it was aware of the pending release of the documentary, which will air on EPIX TV network, and of the producers' intent to file a petition to reopen the investigation.
The documentarians said they have a "trifecta of elements" that will "prove that the officially proposed fuel-air explosion did not cause the crash." That trifecta includes forensic evidence, firsthand sources and corroborating witnesses, and the new statements from retired investigators.
The evidence proves that "one or more ordnance explosions outside the aircraft caused the crash," the producers said. But it does not identify or speculate on the source of the ordnance explosions.