The airplane had not been flown for about 5 years prior to the accident, and was undergoing maintenance in preparation of a ferry flight. A mechanic reported that he had asked the pilot to conduct some engine run-ups as close to full power as possible. The pilot taxied to runway 35, a 2,470 foot-long, 35 foot-wide, gravel and turf runway; where he performed two high speed engine run-ups.

Read the NTSB report…