GLASGOW, Mont. (AP) _ A small plane missing for three days was found crashed Sunday in a remote area of northeastern Montana. The sheriff said none of the four people aboard survived.

The single-engine Cessna 182 was found about 25 miles southwest of Glasgow by a pilot, said Debbie Alke, with the Helena office of the Montana Aeronautics Division. Bad weather had grounded air searches Friday and Saturday.

The people aboard were killed on impact, Valley County Sheriff Glen Meier said. He said about a dozen people planned to go to the crash site Monday to recover the bodies.

The plane was flown by Cut Bank car dealership owner Bill Newman, 45, and carried his sons Lance, 14, and Ray, 24, and Ray's fiancee, Jessica Grode, 21, of Ipswich, S.D.

Newman flew to Mobridge, S.D., to pick up Grode and was returning to Cut Bank in northwestern Montana on Thursday when he radioed that he was encountering stormy conditions near Glasgow, in the rugged region near Fort Peck Reservoir, officials said.

Temperatures in Glasgow were in the negative 20s on Sunday, the National Weather Service reported.

Newman, the plane's owner, earned his pilot's license when he was in high school, and was recertified to fly in September after a 20-year lapse, said his wife, Debbie Newman.

A Federal Aviation Administration official said the plane was believed equipped with an emergency locator beacon, but no signal was picked up.