MH370: If debris is part of missing plane, what's next?

(CNN)If confirmed to be from missing flight MH370, could a small portion of plane wing be the clue investigators need to unlock one of aviation's biggest mysteries?

On the surface, it's what investigators have been waiting for -- the first physical piece of evidence as to what happened to the Malaysian Airlines flight that vanished in March 2014, carrying 239 people.

http://edition.cnn.com/2015/07/30/world/mh370-plane-debris-what-next/index.html