> The "matches" in the headline is only that it came from the same model (Boeing 777) as MH370 - not from the actual plane.

There have only been three 777 crashes [0], and the other two were firmly on land.

Well, the Asiana one at San Francisco clipped a sea wall but the flaps arrived on land. So unless someone has been throwing major 777 wing components into the sea, this is a pretty compelling match.

* [0] Plus two other hull losses whilst static at airports