Incident Overview
A single-engine airplane nosed over during landing at a private grass airstrip. The pilot had previously completed two full-stop landings and departed for a third. According to the pilot's report, on the third landing the wind had shifted to 210 degrees at approximately 3 knots, and the airplane touched down longer than in the previous landings.
Sequence of Events
As the airplane landed, it contacted a 'hump' in the runway surface. This caused the airplane to become airborne again. The pilot reported that the airplane then bounced twice before the nose gear collapsed. After the nose gear failure, the airplane slid for about 200 feet. The nose gear then dug into the ground, causing the airplane to nose over.
Conclusion
The pilot's account describes the chain of events leading to the nose-over, but no official determination of probable cause was provided in the source.