Ka 8 B unterschreitet Landeanflug am Flughafen Grenchen, Strömungsabriss vor der Landung

Grenchen Flugplatz (LSZG), Switzerland Alexander Schleicher K 8 B

Am 13. Mai 1972 versuchte ein Pilot, der ein Alexander Schleicher K 8 B flog, nach einem 5-stündigen Flug am Flughafen Grenchen zu landen. Der Pilot schätzte die Höhe beim Anflug falsch ein und berücksichtigte den starken Gegenwind nicht ausreichend. Dadurch näherte sich das Segelflugzeug zu tief und erlitt einen Strömungsabriss, als es versuchte, eine Straße vor der Landebahn zu überqueren. Das Segelflugzeug wurde beim Aufprall erheblich beschädigt, aber der Pilot blieb unverletzt. Die Untersuchung bestätigte, dass der Anflug des Piloten zu niedrig war, was zum Strömungsabriss führte.

  1. Aerotow cross-country: After an aerotow departure from Grenchen, the pilot flew a K 8 B for over five hours to meet the silver badge duration requirement.
  2. Limited experience: The pilot had a total of 37 flight hours, 29 of them on type, which limited his overall experience in managing demanding approach conditions.
  3. Headwind on approach: A relatively strong northeasterly headwind was present during the approach, increasing the required approach height and energy.
  4. Approach flown too low: On returning to Grenchen after the five-hour flight, the pilot misjudged his height and flew the final approach too low relative to the runway threshold.
  5. Attempt to stretch glide: At about 80–85 km/h the pilot attempted to stretch the glide to clear a road crossing in front of the landing area instead of accepting the low approach path.
  6. Stall and sink near ground: By pitching up at relatively low speed the pilot exceeded the critical angle of attack, the glider sank through in ground proximity, and impacted the ground hard before the intended landing flare.
  7. Hard landing - damage: The glider came to a stop after a short ground run with severe structural damage, while the pilot remained uninjured.
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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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