What happened
A pilot residing on a small island in a remote lake maintained a float-equipped airplane at his residence. On the day of the incident, neighbors observed the pilot performing repairs on a hole in one of the aircraft's floats. At approximately 1500, neighbors heard an airplane engine start up, though the aircraft itself was not seen.
At approximately 1720, a passing aircraft flying over the lake spotted the accident airplane partially submerged and floating upside down, roughly one-half mile from the pilot's island residence. Search personnel were dispatched to the scene and joined local neighbors at the site of the wreckage.
Rescue divers attempted to investigate the aircraft but were unable to determine if the plane was occupied prior to it sinking in 139 feet of water. The pilot remains missing and is presumed fatally injured.