Incident Overview
A pilot reported that during the landing approach, he encountered an updraft on short final and wind shear below tree level as he neared the touchdown end of the airstrip. The airplane touched down approximately one-third of the way down the grass-and-gravel runway.
Landing and Runway Excursion
After touchdown, the pilot experienced poor braking and traction. The airplane continued to slow but eventually overran the end of the runway. Upon exiting the runway, the airplane encountered rough, uneven terrain and nosed over.
Pilot Report
The pilot described the conditions as an updraft on short final and wind shear below tree level approaching the touchdown end. He noted that the airplane touched down about one-third of the way down the runway and that braking and traction were poor. The airplane slowed but could not stop before the runway end, leading to the excursion and nose-over on rough terrain.