A U.S. official says investigators have a “high degree of confidence” that aircraft debris found in the Indian Ocean is of a wing component unique to the Boeing 777, the same model as the Malaysia Airlines plane that disappeared last March.

The official says investigators have identified the piece of debris as a “flaperon” from the trailing edge of a 777 wing.

The debris washed up on Reunion Island, a remote island off the east coast of Africa, which is about 3,000 miles away from the suspected crash site of Malaysia Airlines Flight 370.

MH370 was traveling from Kuala Lumpur to Beijing on March 8, 2014, when it mysteriously vanished less than an hour into the flight. There were 227 passengers and 12 crew members onboard.

Ruth Maclean told Greta Van Susteren "On The Record" tonight that there should be a code somewhere on the wing component that should reveal which plane it came from.

Maclean said that MH370 was the only Boeing 777 ever lost at sea. So if the debris is indeed from that type of aircraft, it would point to it being part of the plane that's been missing for 16 months, she said.

Maclean noted that despite this development, it will still be some time - if ever - that investigators determine where this debris came from and where the rest of it might be.

Watch more from "On The Record" above.

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