State police diving teams were using sonar devices to find the sunken plane.
The U.S. and Canadian Coast Guards provided helicopters and fixed-wing planes for the search. Coast Guard boats were joined by vessels from the Mason County and Oceana County sheriff’s departments and Michigan Department of Natural Resources and Environment, along with number of volunteer boaters.
The search had gone on throughout Friday night. A bright moon and powerful searchlights gave crews a good view of the water’s surface, said Coast Guard Petty Officer Chris Legard, who was aboard a 25-foot craft based in Ludington.
The water was choppy early in the evening but grew calm later, Petter Officer Legard said.
If any survivors “were close to us, we would have been able to see them,” he said.