Incident Summary
During landing, the pilot experienced a complete loss of braking action. To avoid colliding with people or boats, the pilot intentionally ground looped the aircraft. The ground loop was performed as a preventive measure to avert a potential collision.
Pilot Statement
The pilot reported that during the landing roll, the brakes were ineffective. He stated that during the preflight inspection, both plugs in the bottom of the brake cylinders were in place, and the brakes functioned normally while taxiing for takeoff. The pilot believes that an unidentified individual loosened the plugs, which subsequently fell out during flight, causing the brake fluid to drain and resulting in brake failure.
Examination Findings
A post-accident examination of the aircraft revealed that the tapped threads for the brake cylinder plugs were clean and shiny. No further details regarding the condition of the plugs or the brake system were provided in the source material.
No other factors, such as weather conditions, ATC communications, or aircraft specific details, were mentioned in the source.