Circumstances
An aircraft struck power lines while flying over a highway at an altitude of approximately 39 feet above ground level. The lines crossed the roadway. The collision occurred as the aircraft began crossing a valley about 8 miles wide. After striking the wires, the aircraft continued and crashed into rising terrain on the opposite side of the valley.
Witness Reports
Two witnesses near the wire strike location reported seeing the aircraft flying low and following the highway on a westerly heading just before the collision. Other witnesses traveling in cars near the crash site described the aircraft flying low over the highway and zig-zagging back and forth. Moments before the crash, they observed the aircraft enter a steep bank, after which it disappeared behind a hill.
Crash Site Examination
Examination of the accident site revealed that the aircraft was in near level flight when it hit trees on the side of a hill. It then impacted a slope with a 9-degree incline. The pilot sustained serious injuries and was unable to recall the flight or the accident.
Weather Conditions
Witnesses stated that the accident occurred on a dark night with low cloud ceilings and light snow falling.