As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) DURING AGRICULTURE OPERATIONS (SPREADING SUPER) THE PILOT ENCOUNTERED EXCESSIVE ENGINE VIBRATION AND A POSSIBLE OVERSPEED (WAS UNABLE TO READ GAUGES). ENGINE WAS SHUT DOWN AND A FORCED LANDING CARRIED OUT. INITIAL INVESTIGATION FOUND THAT NR 4 OR NR 6 CONNECTING ROD ON THE LT SIDE OF ENGINE HAD PUNCTURED THROUGH THE CRANKCASE.