Le Standard Cirrus décroche dans un demi-tour à basse hauteur avant le terrain

Hildisrieden, Switzerland Schempp-Hirth Standard Cirrus

Le pilote d'un Standard Cirrus a été grièvement blessé quand le planeur a décroché dans un demi-tour bas près de Hildisrieden ; planeur détruit. À son premier vol en près d'un an, l'altimètre réglé trop haut surindiquait ~150 m : le pilote se croyait vers 1300 m, réel 1050 m. En thermiques faibles, 4 km de visibilité et rafales de NE, il est rentré. Vers 100 m, ne pouvant atteindre le terrain, il a fait demi-tour vent arrière ; le planeur est passé sous la vitesse minimale et s'est écrasé. Cause : passage sous la vitesse minimale à faible hauteur ; peu d'entraînement récent, mauvaise visibilité et rafales ont gêné la tenue de l'assiette.

  1. Aerotow training flight: The pilot, with very little recent flight training, departed Luzern-Beromünster on an aerotow training flight after an interruption of almost one year.
  2. Altimeter mis-set: The altimeter was incorrectly set to 1040 hPa instead of the actual 1024 hPa QNH, causing it to overread by about 150 m and giving the pilot an overly optimistic impression of his height.
  3. Low altitude near field: After releasing at about 1050 m and losing height in weak thermals with poor visibility and gusty wind, the pilot reached the field at only about 100 m, unable to reach the runway.
  4. Turn downwind at low height: Over a small wood near Schopfen, at about 100 m above ground, the pilot initiated a 180° reversal turn into downwind to reposition despite the low height and gusty conditions.
  5. Stall in reversal turn: During this low-altitude reversal turn the glider’s airspeed dropped below minimum flying speed, leading to a stall and loss of control.
  6. Crash - serious injury: The glider impacted nose-first at the edge of a field, bounced and rotated 180° before striking tail-first in a meadow, destroying the aircraft and seriously injuring the pilot.
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gliderincidents.com gathers and lists soaring incident reports from official sources. The sources are indicated and linked. These reports are amended by summaries, metadata and translations, some of which have been generated utilizing machine learning (AI). You shouldn't trust the information provided here blindly, and consider reading the official incident report as a fact-check.

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