N6147B

The pilot was cleared to land his wheel-equipped airplane at a lighted gravel airstrip, at night, when he mistakenly landed on a frozen, snow-covered lake used by ski-equipped airplanes. The lake was adjacent to the airstrip. During the landing roll, the airplane's wheels contacted deep snow, and it nosed over, sustaining substantial damage to the wings and fuselage. Airport rescue personnel reported when they arrived on scene, the pilot said that he had landed on the airstrip, and he was unaware that he had inadvertently landed on a frozen lake. The pilot indicated that there were no mechanical anomalies with the airplane.