Accident Overview
During an instrument training flight, the aircraft experienced a sudden engine failure shortly after takeoff, at an altitude of approximately 250 feet above ground level. The certificated airline transport pilot/flight instructor, who was also a certified flight instructor, took control and executed an emergency landing in a water-covered flood control basin. The aircraft sustained substantial damage, but both pilots were uninjured.
Fuel System Examination
A post-accident examination of the fuel system identified the presence of water in the carburetor bowl. Investigators found that the fuel caps had been leaking around the O-ring seals. Additionally, wrinkling of the fuel bladder bottoms was noted, and long-term leakage of fuel from the right fuel cap on the upper wing surface was discovered.
Maintenance History
Airworthiness directives related to the fuel caps and bladder wrinkles were reportedly complied with during the aircraft's last annual inspection. The accident flight was preceded by heavy rain, which may have contributed to water ingress into the fuel system.