On February 12, 2006, at 1529 Pacific standard time, a Globe Swift GC-1A, N80715, veered off the runway and nosed over at Rancho Murieta, California. The pilot/owner was operating the airplane under the provisions of 14 CFR Part 91. The commercial pilot and one passenger sustained minor injuries; the airplane sustained substantial damage. The local flight departed Willows, California, at 1420. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot submitted a written statement. He touched down on the centerline about 200 feet from the approach end of runway 22 at 60 miles per hour (mph). The pilot thought that the right brake dragged (without lockup) for about 125 feet, and the airplane veered off centerline. He also thought that the brake then locked up, and applied heavy right braking. However, the airplane departed the runway. It encountered soft wet earth, and nosed over. The pilot and passenger released their seatbelts/harnesses and exited the airplane after kicking out the canopy on the right side. The Federal Aviation Administration inspected the airplane's braking system and performed a functional test. They found no signs of brake malfunction or lockup. They also found no sign of wear on the tires that would indicate a brake malfunction.