What happened
On July 7, 2016, a GLASER DIRKS DG-300 ELAN, registration D-0118, was participating in the Spanish National Gliding Championship near Sabiñánigo, Spain. While climbing through 2,300 meters in a thermal approximately 4 nautical miles northeast of the town, the aircraft suffered a head-on collision with a vulture.
The impact caused approximately 70% of the cockpit canopy to shatter and damaged the instrument panel. The collision resulted in the loss of functional readings from the altimeter and anemometer. The pilot sustained minor injuries, specifically superficial cuts and a bruise to both legs caused by debris from the cockpit.
Following the impact, the pilot performed a controlled, gradual descent to an unobstructed field at an elevation of 800 meters. Despite the loss of critical flight instruments and high wind noise through the broken canopy, the pilot maintained control of the aircraft and landed normally using the air brakes and landing gear.
The investigation
The CIAIAC investigation examined the flight path, weather conditions, and the pilot's actions. Analysis of the GPS data confirmed the collision occurred during the final climb of the day's stage. The investigation also reviewed the pilot's experience and the local environment, noting that the area is home to significant colonies of griffon vultures, which utilize the same thermal currents as gliders.
Findings
- The pilot was fully licensed and experienced in both the aircraft type and the local flying environment.
- The weather conditions were favorable for flight (CAVOK).
- The bird appeared in the pilot's field of vision so suddenly that no evasive maneuver could be executed.
- The accident was caused by a frontal impact with a large bird of prey.
- The pilot's focus on the competitive aspects of the race—specifically tracking waypoints and following other competitors—contributed to a reduced level of vigilance regarding bird activity.