Incident Overview
A pilot reported that after landing on a grass runway, braking action was very poor due to a heavily irrigated section from mid-field to the departure end. The airplane's tires appeared to hydroplane on the wet grass surface, preventing the pilot from stopping the aircraft before it overran the runway end and struck a fence.
Aircraft Damage
An FAA inspector examined the airplane and noted that the bottom wing skin was torn and one aileron had a hole punctured in it.
Pilot's Comments
The pilot commented that the accident could have been prevented by more closely monitoring the runway watering system and by conducting a physical check of the entire runway before takeoff to determine any variances in surface condition.
Probable Cause
The investigation source did not state a probable cause.