Incident Overview
A pilot conducting a night flight reported that after landing on the runway and decelerating to taxi speed, he proceeded toward the taxiway turnoff. However, he misidentified the correct turn and inadvertently directed the airplane off the runway into a grass area situated between the runway and the adjacent taxiway.
Terrain and Impact
According to the pilot, the grass area featured a downslope that led to level ground. As the airplane transitioned from the downslope to the level surface, the pilot felt a bump from the tail section. This event resulted in substantial damage to the airplane's rudder.
Mechanical Condition
The pilot stated that no preimpact mechanical failures or malfunctions occurred with the airframe or engine that would have precluded normal operation. The aircraft was operating without any known issues prior to the excursion.
Conclusion
The incident highlights a misidentification of the taxiway turn during night operations, leading to an unintended path onto uneven terrain and subsequent damage to the aircraft's rudder. No other contributing factors were reported by the pilot.