Incident Details
A pilot reported departing from a grass airstrip in wet conditions. The short 15-minute flight was uneventful. Upon landing, both main wheels on the tailwheel-equipped airplane would not turn. Full aft elevator control was insufficient to maintain control, and the airplane nosed over.
Damage
The airplane sustained substantial damage to the vertical and horizontal stabilizers.
Landing and Brake Condition
The pilot reported that the brakes were "firm" when checked on final approach. Immediately after the accident, the main wheels could not be rotated. Approximately 45 minutes later, the wheels were free to rotate.
Pilot's Observations
The pilot noted that the temperature was about 35 degrees Fahrenheit. He recalled thinking that water which accumulated on the brakes during takeoff may have frozen during the flight.