1. They have found some parts of the plane.
Where did you get this information? They still haven't find any parts of the plane yet.
Oil split could be some a ship, it doesn't have to be from the plane.
"Late today, the Civil Aviation Authority of Vietnam said on its website that a Vietnamese navy plane had spotted an object in the sea suspected of being part of the plane, but that it was too dark to be certain. Search planes were set to return to investigate the suspected debris at daybreak."
Irish Time