The airplane that left Greenwood to fly around the world and then crashed off the coast of American Samoa last month never gained altitude at takeoff.
The crash killed Babar Suleman of Plainfield and his son, 17-year-old Haris Suleman, who were attempting to fly around the world in 30 days.
A witness told investigators that the wind was strong the night of July 22, and the plane was moving up and down and from side to side as it left the ground, according to a preliminary report from the National Transportation Safety Board.
He saw the two pilots complete pre-flight checks of the plane, and Babar Suleman told him the weather was great, the report said.
Another witness said he thought the engine was loud, and the plane didn't immediately gain altitude. Within a few seconds, he saw the aircraft suddenly go nose down into the ocean, the report said.