Overview
On 31 October 2017, a Cessna 152 operated by a private owner experienced a loss of power during the initial climb phase after takeoff from the aerodrome of Namur-Suarlée (EBNM). The pilot executed a forced landing. The incident was classified as a serious incident involving a powerplant failure. No injuries were reported and the aircraft sustained no damage. Two persons were on board.
Sequence of Events
The aircraft departed at 13:05 UTC for a local non-commercial flight. Shortly after takeoff, while in initial climb, the engine lost power. The pilot conducted a forced landing off the airfield.
Cause
The investigation determined that the engine malfunction was caused by contamination of the carburettor float chamber by a small insect (fly). The insect obstructed the fuel feed to the main nozzle. It entered the float chamber through the vent line of the float chamber.
Investigation
The Belgian Air Accident Investigation Unit (AAIU(Be)) investigated the incident with support from the French BEA and the US NTSB. The examination of the carburettor revealed the presence of the insect. No other anomalies were found.