What happened
On April 12, 2015, a Cessna 172N departed from the Oldenburg-Hatten airfield (EDWH) for a private VFR flight. The aircraft was accompanied by three passengers. During the takeoff roll on runway 06, the pilot noted changing wind conditions. Although the airfield manager had reported a steady wind from 240 degrees, the pilot proceeded with the takeoff.
Shortly after lifting off, the aircraft experienced a loss of altitude and began to bank to the left. After traveling approximately 920 meters, the aircraft collided with bushes and trees before striking the embankment of a water ditch adjacent to the A28 autobahn. The impact was nearly vertical. The pilot sustained fatal injuries, while the three passengers suffered serious injuries.
The investigation
The BFU investigation examined the aircraft's technical condition, the pilot's experience, and the environmental conditions. The investigation confirmed that the engine and all flight control systems were fully functional at the time of the accident, ruling out mechanical failure. The aircraft's takeoff mass was calculated at approximately 1,080 kg, which exceeded the maximum allowable takeoff weight of 1,043 kg, resulting in a rearward center of gravity.
Investigators also found that the flaps were set to 17 degrees, exceeding the manual's recommended takeoff setting of 0 to 10 degrees. Furthermore, the investigation noted that the front-seat passengers were not wearing their shoulder harnesses, as the pilot had informed a passenger that they were only necessary for aerobatic maneuvers.
Findings
- The primary cause of the accident was the aircraft colliding with obstacles during the initial climb.
- A takeoff with a tailwind contributed to the extended takeoff roll and reduced climb performance.
- The use of a flap setting greater than 10 degrees further degraded the aircraft's climb capability.
- The aircraft was operating at an overweight condition with an aft center of gravity.
- The lack of use of shoulder harnesses significantly contributed to the severity of the injuries sustained by the front occupants.