What happened
On August 16, 2009, a privately owned Jodel DR 1050 Ambassadeur, registration OO-MOU, was returning to Kiewit Airfield (EBZH) following a flight to participate in a fly-in event. Upon entering the airfield circuit, the pilot encountered another aircraft performing touch-and-go landings. To maintain separation, the pilot aborted the approach and initiated a go-around maneuver.
During the attempt to increase power for the go-around, the engine malfunctioned and ceased operation. While attempting to maneuver the aircraft back over the airfield, the plane entered a stall. The aircraft subsequently impacted a corn field adjacent to the landing strip, striking the ground nose-first. The pilot sustained one minor injury, while the aircraft suffered heavy damage, including a broken left wing structure and a shattered tail.
The investigation
The investigation by AAIU(Be) focused on the engine's failure and the aircraft's fuel management. Investigators examined the wreckage and found that while the aft fuel tank contained 20 liters of fuel, the forward tank was completely empty. The fuel selector switch was set to the forward tank position.
Analysis of the engine and propeller revealed that the engine was not producing power at the time of impact. The investigation also reviewed the pilot's fuel management practices, noting that the pilot had been primarily using the forward tank for recent flights, deviating from the recommended procedure of using the aft tank during cruise to ensure the forward tank remains full for landing.
Findings
- The pilot held a valid license and medical certificate and possessed extensive experience with this specific aircraft.
- The aircraft was maintained according to manufacturer requirements and held a valid permit to fly.
- Fuel starvation caused the engine to stop during a low-altitude, low-speed maneuver.
- The engine failure led directly to the aircraft stalling and crashing.