Accident Overview
During the landing roll at an uncontrolled airport, the airplane exited the runway and subsequently struck a tree. The incident occurred as the aircraft was decelerating after touchdown. No further details about the aircraft type, registration, or operator were provided in the investigation report.
Examination Findings
A post-accident examination of the wreckage was conducted. The left brake assembly was found intact and operated normally when tested. The right brake line was severed during the impact sequence, but the brake housing appeared normal. There was no evidence of any external hydraulic fluid leaks emanating from the right wheel master cylinder.
Mechanic's Observations
The A&P mechanic who examined the airplane reported that he suspected the right wheel master cylinder was leaking internally due to a worn lock O-ring seal. This suspicion was based on his inspection, though no external leakage was observed. The mechanic did not attribute the runway excursion to this condition, and the report does not state a definitive cause for the accident.