Bunkie, LA, USA
N602BK
Air Tractor AT 602
The pilot reported that he was performing a straight-in approach and landing. The airplane touched down on the runway centerline, and it was under control. After the tailwheel settled onto the runway, the pilot applied the brakes and retarded the engine power to the beta range. Shortly after, the airplane began to swerve left. The pilot's efforts to maintain directional control were unsuccessful, and the airplane departed the left side of the runway, encountered soft ground, and ground looped. The airplane sustained substantial damage to the fuselage, right wing, and vertical stabilizer. The pilot noted that he did not ensure that the tailwheel lock was engaged before landing.
The pilot was performing a straight in approach and landing. The airplane touched down on the runway centerline and under control. After the tailwheel settled onto the runway, the pilot applied the brakes and retarded the engine power into the beta range. Shortly afterward, the airplane began to swerve to the left. The pilot's efforts to maintain directional control were unsuccessful and the airplane departed the left side of the runway. The momentum of the airplane resulted in a "classic ground loop" as it encountered the soft ground adjacent to the runway and then contacted a crop of sugar cane. The airplane sustained damage to the fuselage, right wing and vertical stabilizer. The pilot noted that the "mishap was most likely preventable" because he did not ensure that the tailwheel lock was engaged before landing.
The pilot's failure to lock the tailwheel before landing, which resulted in his loss of directional control during the landing roll, a runway excursion onto soft ground, and a subsequent ground loop.
Source: NTSB Aviation Accident Database
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