On September 8, 2007, a Cessna 185 (registration N1758R) operated by Robert T. Perkins was involved in an aviation accident near Anchorage, AK. Investigators recorded the probable cause as: A loss of engine power for an undetermined reason. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During takeoff initial climb, engine rpm decreased and manifold pressure increased. The airplane reached about 400 feet but did not climb further. Emergency procedures failed. The pilot turned to avoid a building and impacted the lake shore. No mechanical malfunction was found.
Accident Sequence
An airline transport pilot was departing a lake in a float-equipped airplane. During the takeoff initial climb, the engine rpm began decreasing while manifold pressure increased. The airplane attained approximately 400 feet above ground level but failed to continue climbing. Emergency engine failure procedures were performed but did not restore power. The pilot executed a sharp turn to avoid a building and then leveled the airplane just before impact along the shore of the lake.
Postaccident Examination
A thorough postaccident examination of the airframe and engine revealed no mechanical malfunction. The engine was subsequently placed on an engine test stand where it attained full rated rpm without issues.