Collision d'un DG-100 avec des lignes électriques lors d'une tentative d'atterrissage en campagne près de Landeyeux, Suisse

Le 16 juin 1984, un incident s'est produit avec un DG Flugzeugbau DG-100 près de Landeyeux, Suisse. Le pilote, en vol d'entraînement, a décidé d'effectuer un atterrissage en campagne après avoir perdu de l'altitude. En tentant de se poser dans un champ, le pilote a mal jugé la hauteur du planeur et a amorcé un virage, entraînant un décrochage. Le planeur est entré en collision avec des lignes électriques avant de s'écraser, mais aucune blessure n'a été signalée. L'appareil a été détruit dans l'incident.

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.