This update also includes the finding of the debris.
The part is believed to measure 35 inches by 22 inches. The wreckage is a piece of horizontal stabilizer skin, the U.S. official said.
The horizontal stabilizer is the part of the aircraft's tail that is horizontal as the plane flies.
The debris includes a fastener. An official at the fastener company, LISI Aerospace, said the part in question is a pretty standard part.
"I would expect to see this on many varieties of Boeing aircraft, not particular to a 777," said Jared Young, vice president of research and development.
An aviation source said there was no record of any Boeing 777 missing other than Malaysia Airlines Flight 370, which disappeared on March 8, 2014, with 239 people on board.
[video=cnn;world/2016/03/02/mh370-debris-found.cnn]http://www.cnn.com/2016/03/02/us/mh370-possible-debris-found/index.html[/video]
ETA - cnn.com/2016/03/02/us/mh370-possible-debris-found/index.html
Trying again. I don't know why the original link pulled in the video instead of the article so this time I took off the www. from the front of the link.