Incident Spalinger S-19 lors d'un lancement par treuil à l'aérodrome d'Amlikon, accident d'entraînement en vol

Amlikon Flugplatz (LSPA), Switzerland Spalinger S-19

Le 19 avril 1965, un Spalinger S-19 a été impliqué dans un accident lors d'un vol d'entraînement à l'aérodrome d'Amlikon en Suisse. L'élève-pilote, qui venait de passer à ce modèle d'avion, a rencontré des difficultés lors du lancement par treuil lorsque l'extrémité de l'aile gauche a touché le sol, provoquant une déviation du planeur vers la gauche. Malgré les tentatives pour corriger la situation, l'appareil est entré dans une montée raide et a décroché, entraînant un crash. L'élève a subi des blessures graves et l'appareil a été détruit. L'enquête a souligné l'échec de l'élève à libérer le câble du treuil comme facteur contributif.

  1. Winch launch ground roll: During a training winch launch on grass runway 28, the student began the ground roll in the Spalinger S-19 shortly after being newly converted to this type.
  2. Left wingtip strike: While accelerating on the ground, the left wingtip touched the ground and the glider yawed somewhat to the left.
  3. Launch continued, correction: Believing he could recover without issue, the student did not release the winch cable and instead applied full right aileron and rudder to correct the deviation.
  4. Abnormal steep climb: After liftoff, the winch-launched glider, tethered near its center of gravity, pitched into an abnormally steep climb and began a slow right rolling/yawing motion despite full opposite control inputs.
  5. Late cable release: At about 30 m above ground, after the aircraft’s longitudinal axis had passed the vertical with airspeed greatly reduced, the student finally released the winch cable.
  6. Stall and dive: Following cable release, the glider transitioned into a dive from which the pilot, even with full up elevator, could not fully arrest the descent.
  7. Crash - serious injury: Approximately 120 m from the start point the glider impacted the runway area at a 30–45° angle, first striking the right wingtip and then breaking up, seriously injuring the student pilot and destroying the aircraft.
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