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Crashes and are very robust. >> the bottom line is, when you hear that sound, which we'll play again for mary schiavo, it's not clear if they will be able to say if that's a sound from a bomb or something else? >> the air frame coming apart, they will be able to say it was something very fast and very loud. >> all right. thank you very much, miguel. "outfront" now, mary schiavo. you just heard that sound, just that split second of a sound. would that be enough? >> well, it's certainly not enough to, you know, conclusively determine what kind of bomb and where it could be placed, you know, ho...

Distortion and that's telltale that something happened that was very quick, very loud. >> reporter: the voice recorder then indicates all power was cut to the system. >> it's not just about the voices on the voice data recorder. >> no. it's everything. you have to be a real detective and use every bit of information that is recorded on the recorder. >> reporter: investigators found the power cut itself this five millisecond investigation assigned all four of the plane's generators simultaneously seized. the only explanation, the disruption of the passenger cabin floor across its entire width. ...

>> reporter: is it a bird, plane, a man in a jet pack flying around the statute of liberty. >> it was awesome. dream come true. i was having a blast. >> reporter: the actual blast off from a boat was fairly gentle, the founder of jet pack aviation david is the test pilot and yes, he and his chief designer had to get all kinds of approvals to pull this off. >> the faa asked what is it? is it? a jet? is that? >> reporter: the flight lasted about five minutes, the pilot uses hand controls and his body to steer. though he took one hand off the controls for a second. >> i soluted lady liberty on on...

Showed not one blip but four before the plane was coming apart. and then 46 1/2 seconds after that loud noise, flight 103 crashed into the area surrounding lockerbie scotland. 270 people died. 11 of them were on the ground. >> it's pretty stunning. and when you hear the quickness of that sound and slow it down, it's still so quick. this is what they are looking at, this right here, one of the flight voice recorders. >> it's a flight data recorder. it's an older model, probably more similar to what was on 103. 9268 has a more updated one. when the power cut there, it cut completely. on flight 1...

American-made engines but ntsb says they are still waiting. when they see the wreckage, they may be extremely limited in what they are allowed to see. ren rene marsh is "outfront." what are you learning? >> the ntsb is prepared to help but they won't launch until they receive specific information about when and where the plane's engines will be brought for examination. now, the russian passenger planes pratt and whitney engines were made here in the united states and that automatically allows the ntsb to assist. with egyptian leading the investigation, the ntsb's access to the rest of the plan...