Ka 6 Unfall beim Flugzeugschleppstart auf dem Flugplatz Buttwil, Pilot verletzt

Am 15. Mai 1971 war eine Alexander Schleicher Ka 6 CR in einen Unfall während eines Flugzeugschleppstarts auf dem Flugplatz Buttwil, Schweiz, verwickelt. Die rechte Flügelspitze des Segelflugzeugs berührte kurz nach dem Start den Boden, was zu einem Kontrollverlust führte. Das Schleppseil löste sich in etwa 10-15 Metern Höhe, woraufhin das Segelflugzeug in eine steile Rechtskurve geriet und abstürzte. Der Pilot erlitt leichte Verletzungen, und das Segelflugzeug wurde zerstört. Es entstand kein nennenswerter Drittschaden.

1. Aerotow ground roll: During an aerotow takeoff on runway 34, the Ka-6 CR began its ground roll behind the towplane.
2. Right wingtip strike: Shortly after the wing runner released the left wing, the glider’s right wingtip touched the ground, yawing the aircraft slightly to the right.
3. Incorrect rudder inputs: Instead of correcting left, the pilot applied right rudder then neutral, followed by about three further incorrect right rudder inputs during the continued takeoff roll.
4. Large right offset on tow: By the end of the runway at about 10–15 m AGL, the glider was significantly displaced to the right of the towplane and began to yaw further right.
5. Tow rope release: At approximately 10–15 m AGL, the tow rope released from the glider as it was turning to the right, either by pilot action or automatic safety release.
6. Stall in steep right turn: After release, the glider entered a nose-high right turn, dropped below minimum speed, and rolled off over the right wing.
7. Crash - minor injury: The glider impacted the ground about 60 m right of the runway centerline and 40 m beyond the runway end, destroying the aircraft and causing minor injuries to the pilot.