ZENA, Oklahoma - A preliminary report on a plane crash in northeastern Oklahoma that killed a Grove man says the aircraft lost engine power while in flight.

The report from the National Transportation Safety Board published Monday says the pilot tried to make a forced landing after losing engine power and crashed into trees before the plane landed upside down.

The Oklahoma Highway Patrol says 61-year-old pilot Robert Hudson died in the crash last Wednesday and was the only person on board the plane.

The NTSB says Hudson had departed from a private airstrip in Jay on a flight to Grove when he crashed.