On 10/9/71, while on a flight out of Adelanto, California, the Schempp-Hirth Cirrus N6664 crashed near the summit of Mount Baden-Powell. A witness to the accident saw the sailplane climb and cross the mountain ridge and turn to recross it. The sailplane hit the trees on the ridge and crashed on the slope on the other side. Crash investigators didn't find any malfunction with the sailplane. The pilot was killed in this accident.
This Cirrus was C/N 84, manufactured in 1969.