What happened
The pilot reported that the aircraft experienced a complete loss of electrical power after beginning a descent from 12,000 feet to 4,000 feet. The failure was attributed to an alternator malfunction. While approaching Holly Springs Airport for landing, the aircraft encountered unfavorable winds and turbulence. These conditions caused the aircraft to lose airspeed and altitude. The pilot indicated that wind shear was occurring at speeds of 10 to 15 knots. The aircraft subsequently crashed after colliding with trees and power lines.
The investigation
The investigation focused on the mechanical failure of the electrical system. Evidence confirmed that the alternator failed, resulting in the loss of all electrical power. This failure occurred during the descent phase of the flight.
Findings
Contributing factors included the alternator failure which caused the electrical outage. The pilot also encountered wind shear and turbulence during the approach. These weather conditions led to a loss of airspeed and altitude, resulting in the collision with terrain obstacles.