Accidente del SZD-9 Bocian durante vuelo de entrenamiento cerca de Dessau resulta en dos fallecimientos
El 10 de julio de 2001, un Zaklady SZD-9 bis 1E Bocian se estrelló durante un vuelo de entrenamiento cerca de Dessau, Alemania. El planeador, pilotado por un instructor experimentado y un estudiante, entró en pérdida después de soltarse del avión remolcador y se impactó contra el suelo casi verticalmente. Ambos ocupantes resultaron fatalmente heridos y la aeronave fue destruida. La investigación reveló que el instructor sufrió un ataque al corazón durante el vuelo, lo que pudo haber contribuido a la incapacidad de recuperarse de la pérdida. Las condiciones meteorológicas en ese momento se reportaron como normales, y no se encontraron fallas técnicas en el planeador.
- Aerotow training flight: A dual instructional flight for PPL-C training in a Bocian glider commenced by aerotow from Dessau with the student in front and the instructor in the rear seat.
- Instructor heart disease: The instructor had severe pre-existing coronary artery disease and suffered a fresh extensive myocardial infarction during the flight, likely impairing his ability to supervise and control the glider.
- Post-release maneuvering: After tow release at about 450 m and several normal circles, the glider flew in a southeasterly direction with large pitch oscillations and high angles of attack, consistent with stall recognition or similar maneuvers at relatively low height.
- Low-altitude spin entry: Approximately 400 m beyond the launch point at 250–300 m altitude, the glider entered a fully developed spin with two to three rotations observed and no visible recovery inputs.
- Unrecovered spin descent: The spin continued without effective recovery action, possibly aggravated by the incapacitated instructor and potential partial blockage of the controls.
- Crash - fatal: Still in an unrecovered stalled condition, the glider impacted the ground near the airfield at an angle of about 60–70 degrees, fatally injuring both occupants and destroying the aircraft.