Colisión del Ka 4 Rhönlerche II con marcador de aeródromo durante el aterrizaje en Fricktal Schupfart
El 16 de agosto de 1970, un Ka 4 Rhönlerche II colisionó con un marcador de pista en el aeródromo de Fricktal Schupfart. El incidente ocurrió después de que un piloto estudiante perdiera el control durante la fase de aterrizaje tras una aproximación pronunciada. La aeronave sufrió daños significativos, pero el piloto estudiante resultó ileso. Las condiciones meteorológicas eran estables sin turbulencias, y no había otras aeronaves en las cercanías durante el incidente. El informe destaca la falta de una franja de aterrizaje objetivo como un factor potencial en el incidente.
- Solo landing approach: During his first solo flight at Schupfart, the student flew a normal circuit and turned onto final for runway 26 after descending to about 180 m AGL.
- Steep glissade with brakes: On final the student initiated a right sideslip (glissade) and simultaneously extended the airbrakes, producing an unusually steep approach path over the maize field.
- Low solo experience: The student was in the early phase of solo training with limited solo time and this was his first solo landing at Schupfart.
- No landing reference: No target landing strip or landing T was laid out on the airfield, reducing visual landing guidance for the student.
- Loss of composure low: At about 8 m above the maize field the student, surprised by the rapid arrival in ground proximity, became disoriented and reported that he 'lost his head'.
- Improper flare and rollout: He retracted the airbrakes and pushed the glider down slightly right-wing-low, touching down about 40 m before the runway and rolling at high speed off the landing line toward the runway edge markers without visible corrective steering.
- Crash - no injury: The glider continued uncontrolled and collided with the concrete runway edge marker, heavily damaging the aircraft while the student remained uninjured.