Astir CS stalls turning into wind and hits a concrete wall on an outlanding

Outlanding near Doubravy on a cross-country flight, the pilot of a Grob Astir CS was seriously injured and the glider substantially damaged when it stalled turning into wind and hit a concrete wall. Heading home, the pilot had searched near Provodov for lift in vain. His first field proved markedly cross-sloped, so he flew on to a short meadow 750 m away, passed it downwind at about 64 m AGL and turned back over farm buildings to land into wind. In the turn, begun at about 35 m AGL, the speed probably fell below approach speed; the glider cleared a metal hall and ended up hanging on the top edge of the wall.

1. Cross-country flight from Břeclav: The pilot was aerotowed from Břeclav at 10:58 and released at 155 m AGL. He climbed to about 1,240 m AGL and set off on a thermal cross-country flight east via Hodonín and Napajedla.
2. Few cumulus, hard to read: Past Komárov, heading for the Čadca turnpoint, the cumulus were few and indistinct in a north-easterly wind the pilot put at 26 km/h. Near Provodov he decided to turn for home.
3. Lift search at low height: He searched the southern slopes near Provodov for lift at low height without gaining any, then flew on over hilly ground towards a field near Březůvky.
4. First field cross-sloped: Flying alongside it on the downwind leg, down from about 100 to 80 m AGL, he found it markedly cross-sloped where he would have turned base, and flew on to a short meadow 750 m away.
5. Turn into wind from 35 m AGL: Passing the meadow downwind at about 64 m AGL, he turned right over farm buildings to land into wind. In the turn, begun at about 35 m AGL, the speed probably fell below 90 km/h.
6. Wall strike; pilot seriously hurt: Completing the turn at stalling speed, the glider cleared a metal hall but sank onto the concrete wall of a silage pit. It struck the wall with its lower fuselage and stuck on the top edge.