Accident Details
The pilot reported that preflight and engine run-up were satisfactory before departure from a 1,641-foot long grass runway. The grass was estimated to be 5 to 6 inches high and soft due to rain earlier in the week. The pilot consulted the Pilot’s Operating Handbook (POH) and confirmed no flaps for takeoff. After engine run-up, the pilot taxied onto runway 32, applied full throttle with flaps retracted, noting 2,200 rpm, then released the brakes. Wind was from the northwest at 3 to 5 knots. The pilot did not initially use soft field takeoff procedure of aft control input but did so as the takeoff roll continued, later stating that he "probably didn't initially have the yoke back enough." After a little more than halfway down the runway at an airspeed less than 50 mph, the pilot aborted the takeoff. Unable to stop, the airplane impacted a guardrail at the end of the runway, causing the airplane to nose over. The pilot stated there were no preimpact mechanical failures or malfunctions precluding normal operation. He recommended better assessment of the conditions and effects of the grass (softness) and length of the runway, and to either not initiate takeoff or abort sooner. He also indicated that the accident might have been prevented if a perfect soft/short field technique was used.
Inspection and Aircraft Information
Postaccident inspection by a Federal Aviation Administration airworthiness inspector revealed substantial damage to the right wing spar and structure adjacent to the left main landing gear attach point. Another FAA inspector reported no obstructions at the departure end of runway 32. A review of the airplane Owner's Manual indicates 0 flap extension is specified for normal and maximum performance takeoff; however, 10 degrees of flaps is specified to be used for minimum ground runs or for takeoff from soft or rough fields with no obstacles ahead. The takeoff performance chart does not indicate distances for grass runway. Excerpts of the Owner's Manual are contained in the NTSB public docket.