Accident Overview
A pilot was conducting aerial spraying operations for mosquito control over a marshy area. After completing a spray pass, the pilot initiated a right 180-degree turn to an easterly heading. During the turn, the right wing of the aircraft struck an unlit 100-foot radio tower. The tower was located within the walls of a correctional facility, used for ground communications, and had been in place for several years. It was not depicted on sectional charts.
Sequence of Events
Following the impact, the pilot was unaware of the extent of the damage but noted a controllability issue. He decided to land in a pasture. During the landing roll, the aircraft struck and killed a cow and a bull. It then collided with a pile of wood, resulting in substantial damage to the airplane.
Probable Cause
The official probable cause of the accident is the pilot's failure to see and avoid the radio tower.