Flight Details
According to the pilot/owner, the flight was intended for two private pilots to practice short field and crosswind landings. The flight departed the originating airport after both pilots had completed practice touch-and-go takeoffs and landings, and then proceeded to another airport.
Accident Sequence
Upon arrival at the destination airport, the pilot/owner executed one touch-and-go landing. Subsequently, the other pilot took control of the airplane to practice another touch-and-go. The pilot/owner reported that while the other pilot was in the process of landing, at the point of the landing flare, "a wind shear was encountered, which caused an immediate loss of lift and a hard touchdown." In a written statement and event diagram, the pilot/owner depicted the airplane landing adjacent to a tree line, which was upwind from the airplane's touchdown point.
Weather Conditions
The pilot/owner reported the wind from the south at 8–10 knots. The closest weather observation facility reported the wind from 200 degrees at 8 knots.