Incident Overview
A glider accident occurred during a flight with a private pilot at the controls in the front seat and a certified flight instructor (CFI) in the rear seat. The CFI stated that his role was to observe the private pilot's technique and judgment, with no formal instruction planned.
Sequence of Events
According to the CFI, the private pilot flew the glider beyond gliding distance from the departure airport. Although the CFI said he protested the pilot's action, he allowed it to happen. With the private pilot still on the controls, the glider was set up for a precautionary off-airport landing in a field. During the approach, the glider encountered an area of sink. Subsequently, the glider struck a tree, spun around, and hit the ground nose first.
Post-Accident Information
The source does not specify any injuries, the aircraft type, registration, date, or location of the accident. No further details are provided regarding damage or other circumstances.