Background
The incident began during a local flight that included three landings on a 2,860-foot runway at Sportsman Airpark. The pilot subsequently landed on a 2,300-foot turf runway at Chehalem Airport under light and variable wind conditions.
Incident Details
While landing on the turf runway at Chehalem, the aircraft rolled beyond the departure end of the runway. It then crossed a ditch and a road before coming to rest in a second ditch. The pilot reported that the brake effectiveness was questionable during the landing.
Examination
An examination of the runway revealed scuff marks from the aircraft's main wheels, beginning approximately 150 feet from the departure end. The owner of a brake repair facility stated that these marks indicated to him that both brakes were activated and locked. The right main landing gear failed when the aircraft crossed the first ditch. At that location, a spray pattern of hydraulic fluid was found, which was typical of fluid under pressure. A subsequent examination of the brakes revealed only normal wear.