What happened
On June 30, 2019, a Cessna T206H, registration PR-RMH, was performing a private flight from Jataí, Goiás, to Estância Recanto, Mato Grosso. Shortly after takeoff, the pilot experienced a mechanical failure when the flaps failed to retract fully, remaining stuck at a 10-degree setting. Although the flaps eventually retracted on their own during the flight, the pilot proceeded to land at the destination without using the flaps.
During the approach to runway 31, the pilot did not identify the windsock and chose the runway without accounting for the wind conditions, which were estimated at a 10 to 15-knot tailwind. The pilot performed the approach above the recommended glide slope and at a speed higher than prescribed for a flapless landing. The aircraft touched down after the first third of the 900-meter runway. Due to the high speed and tailwind, the aircraft could not be stopped within the remaining runway length, overran the threshold, crossed an embankment, and came to a stop after colliding with a perimeter fence. The aircraft sustained substantial damage, but the pilot was uninjured.
The investigation
CENIPA's investigation focused on the performance requirements for the landing under the specific conditions present during the occurrence. The investigation established that the aircraft was within weight and balance limits, and the pilot was properly licensed and qualified.
Investigators calculated that the required landing distance was significantly greater than the available runway. For a flapless landing with a 10-15 knot tailwind on an unpaved grass surface, the required ground roll distance was estimated between 2,274 and 2,598 feet. However, because the touchdown occurred approximately 300 meters into the 2,953-foot runway, only about 1,969 feet of runway remained available. Furthermore, the investigation noted that the runway at Estância Recanto was in poor condition, featuring weeds, debris, and uneven surfaces, which further compromised safety.