Small plane crash in Detroit

While in cruise flight the airplane lost all electrical power and the pilot extended the landing gear using the emergency gear extension hand crank. During landing the main and nose landing gear collapsed resulting in substantial damage. According to the Cessna 310L Pilot Operating Handbook (POH), when the landing gear does not extend electrically the pilot is to rotate the emergency landing gear hand crank, "Clockwise four turns past point where gear down lights come on (approximately 52 turns)." Due to the electrical failure the gear position indicating lights were inoperative.