An American adventurer says it would be a "very lucky discovery" if the piece of aircraft he found recently on a sandbank off the coast of Mozambique is confirmed to be from the Malaysia Airlines jet that vanished two years ago.

Blaine Gibson flew to Malaysia to attend a commemorative event to be held Sunday by families of the 239 people who were on board Flight 370 to mark the second anniversary of the plane's disappearance.

Speaking to The Associated Press upon his arrival at the airport outside of Kuala Lumpur, Gibson said Saturday that he was cautious about the possibility that the part is from the missing Boeing 777 because three large jets had crashed in the area before.