The National Transportation Safety Board announced it is investigating the wreckage of a 1997 Michigan plane crash discovered this week.
The wreckage was located Wednesday by National Forest personnel in a remote area near St. Ignace, according to NTSB public affairs officer Eric Weiss.
On Sept. 14, 1997, the single-engine Piper aircraft carrying a pilot and one passenger was reported missing following departure from Drummond Island.
A final accident report filed by the NTSB in 1998 said the Toronto Air Traffic Control Center's radar showed the plane leave Drummond Island and travel south around 20 to 25 miles before making a 180 degree turn and disappearing from radar.
"The airplane is presumed destroyed and the pilot and passenger are presumed to have sustained fatal injuries," the accident report said.
Mark Davies, the pilot, and his wife Janet, the passenger, were headed to Howell. Neither the plane nor the couple were ever located until now, and the reason for the crash was listed as undetermined.