DG-100 collision with power lines during outlanding attempt near Landeyeux, Switzerland
On June 16, 1984, a DG Flugzeugbau DG-100 experienced an incident near Landeyeux, Switzerland. The pilot, on a training flight, decided to perform an outlanding after losing altitude. While attempting to land in a field, the pilot misjudged the glider's height and initiated a turn, leading to a stall. The glider collided with power lines before crashing, but no injuries were reported. The aircraft was destroyed in the incident.
- Local training flight: The pilot departed Neuchâtel by aerotow for a local training flight and released at about 1600 m near Mont Racine before proceeding along the ridge toward Chasseral.
- Unable maintain height: After encountering sink and downdrafts leaving the Val-de-Ruz and failing to find expected lift on the Chaumont ridge, the pilot realized he could no longer maintain sufficient height and needed to plan an outlanding.
- Continued toward ridge: Despite having already selected a suitable field near Engollon and still having 300–380 m in reserve, the pilot continued toward the north slope of Chaumont instead of committing to a direct outlanding.
- Height misjudged: When turning back from the Chaumont slope toward the chosen field, the pilot misjudged his remaining height and believed it sufficient to fly a standard circuit rather than a direct approach.
- Abandoned direct landing: Approaching overhead the intended field, the pilot first prepared for a straight-in landing into an adjacent field and briefly deployed airbrakes, then changed his mind again and initiated a left turn to fly a conventional pattern.
- Low-speed turning stall: During the left turn toward the planned circuit path, at low height and with insufficient speed, the glider stalled and descended into the path of an electrical line.
- Crash - no injury: The glider struck the power line, causing a short circuit, and then crashed to the ground destroying the aircraft but leaving the pilot uninjured.