when investigators were able to salvage pieces of the jet s lavatory, beverage carts, even the engines. a tail section, a wing, a piece of the wing. one of the two engines. that would be an excellent clue because basically you could start at that point and work your way out and hope to find more wreckage. reporter: but first something, anything, has to be found to produce the lead that s eluded the world for more than five weeks. david mattingly, cnn, daytona beach, florida. fascinating, thank you, david. when searchers do find pieces of this plane, what can they learn from them? we re going to talk about it with a former faa accident inspector.
lavatory, beverage carts, even the engines. tail section, a wing, a piece of a wing. one of the two engines may be fully intact on the sea bottom that would be an excellent clue, because basically you could start at this point and work your way out and hope to find more wreckage. reporter: but first, something, anything has to be found to produce the lead that has eluded the world for more than five weeks. david mattingly, cnn, daytona beach, florida. now i want to bring in our aviation specialists, les abin, mary schiavo. you would think there would be a lot of debris. yet here we are 40 days and there has been none. there a scenario you think this plane could be essentially intact at the bottom of the ocean? the only scenario is if that airplane was guided down by a pilot in a controlled ditching situation. and even then there would still be fragments broken off.