At approximately 18:47 CDT, the pilot of a Piper Apache intentionally ground-looped the airplane after the brakes reportedly failed to operate during the landing ground roll. The two pilots aboard were uninjured. The pilot-rated passenger said the aircraft landed on the 2,600-foot sod runway at approximately 75 mph but there appeared to be no brakes. As the aircraft neared the east end of the runway, the aircraft was ground-looped to keep from crossing Kerr Road and going into the trees. The aircraft exited the runway to the left, crossed a ditch and came to a stop in the eastbound lane of Highway 321. An inspector examined the brakes and found no anomalies, then performed an operational check and the brakes functioned properly.