Spalinger S 18 III accident during landing in turbulent conditions at Bex Aérodrome
On May 30, 1965, a Spalinger S 18 III experienced an accident during landing at Bex Aérodrome in Switzerland. The pilot, conducting a training flight, encountered strong crosswinds and turbulence upon approach. Despite efforts to correct the landing path, the glider lost control and crashed on the grass runway. The pilot was unharmed, but the glider sustained significant damage, resulting in a total loss. Two other gliders landed safely shortly after the incident.
- Aerotow training flight: The pilot departed Bex aerodrome on an aerotow in glider S-18 III HB-487 for an approximately one-hour training flight.
- Crosswind approach begun: On return to land before an approaching storm, the pilot began a right-hand base leg to runway 33 at about 150 m AGL with airbrakes extended in a strong left crosswind of 30–40 km/h.
- Strong turbulence: The approach was affected by strong turbulence associated with the changing weather and crosswind, making control more difficult.
- Low approach speed: During the base-to-final segment the glider was flown too slowly for the turbulent, crosswind conditions.
- Deviated toward obstacles: Unable to maintain a proper approach path in the crosswind, the glider drifted left toward the edge of the airfield and nearby obstacles.
- Low turn with airbrakes: At only 3–4 m above the ground, the pilot initiated a right turn with airbrakes still extended to avoid the obstacles, further reducing effective airspeed and lift.
- Crash - no injury: The glider abruptly rolled off, stalled, and crashed onto the grass runway, heavily damaging the fuselage and right wing while the pilot remained uninjured.