Finding Soot News Today

Paradigm. i believe the answers to this crash are in the cockpit. who was in control of that airplane? >> reporter: the passengers themselves could help resolve the mystery. >> if you can retrieve bodies and examine the respiratory tract, one of the first things you look for is the presence of soot. finding soot below the level of the larynx would be a good indication of a fire. >> reporter: if the cabin was depressurized before the fire -- >> passengers would most likely pass out. there would b...

Who was in control of that airplane. >> reporter: the passengers themselves could help resolve the mystery. >> if you can retrieve bodies and examine the respiratory tract, one of the first things you look for is the presence of soot. finding soot below the level of the larynx would be a good indication of a fire. >> reporter: but if the cabin was depressurized before a fire -- >> passengers would most likely pass out. there would be no evidence of trauma to the body or something that you could ...