Loss of Control During Landing Roll Due to Sudden Wind Shift (N7789P)

What happened

The pilot reported that the aircraft executed a landing while encountering a left quartering tailwind of approximately six knots. The initial phase of the landing roll proceeded without incident for the first 100 feet. However, the wind conditions changed abruptly during this period. The pilot stated that the wind speed suddenly increased, which compromised the ability to maintain directional control. As a result, the aircraft ground looped to the left and departed the paved surface of the runway.

Findings

The primary factor in this incident was the sudden increase in wind speed during the critical landing roll phase. The change in wind dynamics prevented the pilot from maintaining adequate control authority over the aircraft's heading, leading directly to the ground loop and subsequent departure from the runway environment.