Incident Overview
During the execution of a VOR approach on a dark, foggy night, the pilot turned on the landing lights while on short final. This action led to a loss of depth perception and ground contact. A hard landing ensued before corrective action could become effective, resulting in damage to the wing spar, engine mounting support, and propeller.
Environmental Conditions
The runway and the entire airport were covered with approximately three inches of mirror-smooth ice. This created considerable glare, which compounded the already challenging visibility conditions. The night was dark and foggy, further reducing visual cues.
Occupant Outcome
All four occupants of the aircraft escaped the incident without injury.
Damage
Damage was sustained to the wing spar, engine mounting support, and propeller due to the hard landing.