On August 21, 2003, a Cessna 150F (registration N8065F) was involved in an aviation accident near Laramie, WY. Investigators recorded the probable cause as: A partial loss of engine power for undetermined reasons. Contributing factors were the high density altitude, trees, mountainous terrain, and unsuitable terrain on which to make a forced landing. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During cruise at 10,500 feet, an airplane's engine lost power. The pilot conducted a forced landing in mountainous terrain, striking trees and damaging both wings. Subsequent engine testing found no anomalies.
Incident Overview
A pilot reported experiencing engine roughness while the airplane was in cruise flight at an altitude of 10,500 feet. The engine power dropped below 2,000 rpm, and the pilot was unable to restore power. The pilot executed a forced landing in mountainous terrain.
Damage and Terrain
During the landing, the airplane struck several trees, resulting in substantial damage to both wings. The terrain was mountainous, and the density altitude at the time was calculated to be 10,312 feet mean sea level.
Post-Incident Engine Test
Following the incident, the engine was functionally tested and operated at 2,475 rpm. No mechanical anomalies were identified during the test.