PZL Bielsko Jantar se estrella tras pérdida de sustentación durante lanzamiento con cabrestante en Jena-Schöngleina

El 11 de agosto de 1998, un PZL Bielsko Jantar experimentó una pérdida de sustentación durante un lanzamiento con cabrestante en Jena-Schöngleina, Alemania. El planeador entró en un ascenso pronunciado, lo que resultó en una pérdida de sustentación y posterior choque desde una altura de 40-50 metros. El piloto resultó fatalmente herido y la aeronave fue destruida. La investigación no reveló problemas mecánicos, pero señaló la posibilidad de que la salud del piloto afectara el tiempo de reacción. Las condiciones meteorológicas eran favorables en el momento del incidente.

1. Winch launch climb: During a winch launch for a planned thermalling flight, the glider climbed after liftoff from runway direction 200° at Jena-Schöngleina.
2. Excessive pitch-up: Immediately after becoming airborne, the glider was flown into a climb with an excessively high angle of attack, resulting in an overly steep climb attitude.
3. Low launch height: The developing abnormal attitude and speed occurred at a low winch launch height of about 40–50 m, leaving little altitude margin for recovery.
4. No correction made: The pilot did not correct the excessive pitch and high angle of attack during the initial winch climb.
5. Stall and wing drop: As the airspeed decreased below stall speed in the steep climb, the glider stalled and rolled off over the left wing, entering further rotation about both pitch and roll axes.
6. Crash - fatal: From approximately 40–50 m height the glider impacted the ground almost vertically in a slight inverted attitude about 100 m from the launch point, fatally injuring the pilot and destroying the aircraft.