ntsb investigators of that disaster. like the metro jet crash, satellite imagery captured a midair heat signature. >> we had that same occurrence at twa flight 800, a satellite picked up the signature and it indicated, it confirmed for us what eyewitnesses had seen, that there was a fire ball. but. >> but it didn't explain why. it was simply a clue. also shared between the two disasters, unexplained split second sounds on the flight data recorders before they stopped recording. the similarities leave gultz to believe a possible rupture in the fuel tank, which caused the twa crash may also be to blame in the russian plane disaster. investigators found much of the main debris field close together, but three miles away was the tail section. that holds another clue. possible structural failure in. in november 2001, the air bus' tail hit the tarmac on landing. the plane was repaired, but the