What happened
Shortly after departure, the pilot reported experiencing a heavy vibration accompanied by a complete loss of engine power. In response to the mechanical failure, the pilot attempted an emergency forced landing in a nearby wooded area. Upon impact, the aircraft was destroyed by a post-crash fire. The pilot sustained burn injuries during the incident.
The investigation
A technical examination of the recovered engine components revealed that the number 4 connecting rod had failed. The failure was attributed to oil starvation within the engine assembly. Investigators attempted to identify the specific point or mechanism through which the oil was lost from the system. However, due to the extensive damage caused by the post-crash fire, the exact source of the oil loss could not be determined.
Findings
The sequence of events indicates that a critical mechanical failure occurred during the initial phase of flight. The primary contributing factor was identified as the failure of the number 4 connecting rod, which resulted directly from oil starvation. The inability to pinpoint the origin of the oil loss is attributed to the severity of the fire damage sustained after the crash.
Safety message
This incident highlights the critical importance of maintaining adequate lubrication systems in aircraft engines. Regular inspection for oil leaks and monitoring oil pressure are essential practices to prevent catastrophic engine failures caused by starvation.