FRANKFORT, MI (WILX) - Authorities have released the names of two men they believe were aboard a small plane that went missing over Lake Michigan on Sunday.
65-year-old Randal Dippoid, of Perry, and 53-year-old Emanuel Manos, of Monroe, were onboard when it went into Lake Michigan, the sheriff confirmed.
It isn't clear which man was piloting the plane that dropped off radar Sunday night about 4 miles west of Frankfort.
The plane left Ontonagon and was heading to Monroe when the Coast Guard says a report came in that it was experiencing engine problems. Controllers then directed it to an airport in Frankfort when it vanished.
Crews have been searching the waters of Lake Michigan in Benzie County for the past few days trying to find the single-engine Beechcraft 35 Bonanza plane.
The Sheriff says the plane probably went down three to four miles off the coast of Frankfort, where the water can be 300 to 600 feet deep.
"We don't know exactly where this plane, if it went in the water or if it maybe crashed on land. So that's why we're expending all possibilities to look for it," Benzie County Sheriff Ted Schendel said.
So far there's no sign of it. The Sheriff says volunteers were out searching Monday and more will be combing the coastline on Tuesday.
They're hoping someone, somewhere finds something.
"If the public comes across it, a fisherman out on Lake Michigan, we've got other people trail hiking and things like that, so we're hoping that we can come up with it," Sheriff Schendel said.
The family told News 10's Megan Hiler that Dippold was 65 and had been flying planes since he was 16 years old. They say he was a man of integrity, was quiet, generous, and loving.
The sheriff says state police will be bringing an autonomous submarine sometime within the next week to search the waters.
The sheriff's office says the search now is a recovery mission.
To see the flight tracker of the plane, click here.
Copyright 2019 WILX. All rights reserved. The Associated Press contributed to this report.