the pilot's improper in-flight planning and decision making during an instrument approach resulting in the pilot's intentional descent below approach minimums, and the pilot's failure to maintain obstacle clearance resulting in the in-flight collision with an object. Contributing factors include the dark night light conditions, and the wires.

INADVERTENT LANDING GEAR RETRACTION BY THE PILOT FLYING THE AIRCRAFT. A FACTOR WAS INADEQUATE SUPERVISION BY THE FLIGHT INSTRUCTOR.