Engine Failure During Initial Climb Leads to Water Landing (N8260Q)

What happened

Following departure from the airport, the aircraft entered its initial climb phase when the engine suddenly lost power. With no option to return to the airfield, the pilot executed a forced landing onto a nearby body of water. The aircraft sustained significant damage upon impact with the surface.

The investigation

A thorough examination of the aircraft's engine was conducted to determine the root cause of the power loss. Investigators discovered that the connecting rod bolts on cylinder number three had failed. Further inquiry revealed that the company director of maintenance had reused these bolts during the last engine overhaul. This action violated the manufacturer's engine overhaul manual, which explicitly required new bolts or strict inspection protocols for reuse.

Findings

The failure of the connecting rod bolts was the primary mechanical issue. The reuse of these components without proper inspection directly contributed to the catastrophic engine failure. This incident highlights the critical importance of adhering to manufacturer maintenance guidelines during engine overhauls to prevent structural failures in flight-critical components.