What happened
The pilot reported that the engine failed shortly after the aircraft reached its intended cruise altitude. With no option to return to the departure point or reach a nearby airport, the crew initiated a forced landing procedure. The aircraft touched down on terrain covered by tundra and encrusted snow and ice. The impact forces caused the landing gear to collapse upon contact with the ground.
The investigation
During the on-scene examination of the wreckage, investigators identified the fuel injector as the component responsible for the loss of power. Initial inspection revealed that the unit allowed only a small amount of fuel flow, which was insufficient to sustain engine operation. To determine if the failure was due to impact damage or pre-existing mechanical issues, the fuel injector was removed and subjected to bench testing. The subsequent test showed the unit operating normally, suggesting the restriction observed at the scene may have been caused by debris or contamination rather than a permanent internal defect.
Findings
The primary factor leading to the accident was the sudden loss of engine power during cruise flight. The inability to maintain altitude necessitated an emergency landing in unprepared terrain. The collapse of the landing gear was a direct result of the hard impact with the snow and ice-covered ground, which absorbed less energy than paved surfaces.
Safety message
Pilots should be aware that fuel system restrictions can occur due to contamination or debris. Regular pre-flight inspections and attention to fuel quality are essential to prevent in-flight engine failures.