El ASK 21 hace un globo en una final alta y cae sobre la pista
En el tercer vuelo solo de un alumno en ASK 21, una final no estabilizada terminó en una toma dura; el alumno resultó gravemente herido, el planeador con daños leves. La final a la pista 34 era alta y rápida y, virada tarde, a ~120 m a la izquierda del eje. Tras fuertes correcciones izquierda/derecha, el alumno picó el morro y luego —ante la orden radio correcta de tirar— tiró demasiado. Hizo un globo a unos 7 m, se hundió nivelado y golpeó el borde de la pista. El centrado estaba 10 mm tras el límite trasero —faltaban dos masas de trim—, favoreciendo el globo. Causas: final no estabilizada, mala apreciación de la actitud, centrado trasero.
- Aerotow landing pattern: During the third solo flight after an aerotow in an ASK 21, the student entered the landing circuit for runway 34 with the CG 10 mm behind the aft limit.
- Aft CG beyond limit: The glider was flown with two trim weights missing, placing the centre of gravity 10 mm aft of the allowable rear limit, making pitch control more sensitive.
- High, offset final: The student flew a high base and final, turning into final too late and ending up about 120 m left of the runway 34 centreline.
- Aggressive course corrections: On final at about 120 km/h, the student first corrected slightly right, then made strong right and left corrections to regain the runway centreline, remaining high and under stress.
- Nose-down then over-pull: Shortly before the threshold the student pushed the nose down, increasing speed, then after the instructor’s radio call to 'pull' she pulled back too strongly on the stick.
- Balloon then sink: The glider ballooned to about 7 m above ground and then sank through in a nearly level attitude with half airbrakes extended and the nose slightly down.
- Crash - serious injury: The glider impacted near the right edge of the paved runway, causing serious injury to the student pilot and minor damage to the aircraft.