The National Transportation Safety Board blamed it on inadequate preflight inspection.
There was a loss of engine power because the fuel was contaminated with water from a recent rainfall, the NTSB said.
The plane crashed shortly after takeoff in West Caln Township on February 1, 2024.
Longtime school board member killed in West Caln Township, Pa. plane crash
The pilot, Sam Ganow, was the only one onboard.
He was the Octorara Area School District board president.