apart, part by part, to look inside it to see what clues that can give away. they may well be able to tell us very soon whether this part belongs to mh-370 and perhaps even with further tests how the plane came to go down in the indian ocean. did this part come away from the plane in the air? did it come away on the sea? but they will not be able to tell us why. that will come from the flight data recorder. john, kate? >> how much of this early analysis is to link it to mh-370 and can that be done with something as simple as a part number or some kind of component number? and how much of it is as you say to try to forensically determine what might have happened to the plane either in the air or in the water? >> reporter: yeah, john, there are a number of stages to this. i really want to clarify that. there are part numbers and there are serial numbers. i can understand the impatience