Incident Overview
The pilot of a single-engine aircraft initiated an emergency landing in a swamp after observing a loss in oil pressure. During the landing, the aircraft impacted trees and sustained substantial damage. The pilot reported minor injuries.
Investigation Findings
A subsequent investigation of the engine's oil sump revealed the presence of several metal pieces, including shavings of bearing material, the head portion of a connecting rod bolt, and a section of the oil pump coupling that connects to the aft crankshaft gear. Additionally, one of the teeth on the impeller of the oil pump was found to have completely separated and become wedged between the impeller and the oil pump housing.
Conclusion
The source provides no explicit probable cause for the oil pressure loss or the engine failure.