NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
The pilot in the tailwheel-equipped airplane reported that, about 30 minutes into the flight, the oil pressure gauge needle entered the yellow (caution) arc. The pilot decided to make a precautionary landing at the nearest airport and to land on the grass on the right side of the asphalt runway. Before landing, he overflew the grass surface twice and then conducted a touch-and-go landing to assess the surface condition. The third approach and landing were normal, but during the landing roll, the main landing gear wheels encountered "a soft patch of muddy soil," and the airplane nosed over.
The airplane sustained substantial damage to the empennage.
The pilot reported that the only mechanical malfunction that occurred was specific to the oil pressure gauge.