What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The aircraft was enroute from sheridan WY (kshr) to Hailey id (ksun) at approximatelly 8500' and 22 miles se of Hailey id when a moderate engine vibration was detected by the pilot. Within 2-3 minutes the vibration became severe and the pilot declared an emergency to the Hailey tower. A large volume of smoke was reported coming from the lower engine cowl. The aircraft landed on runway 31 without further incident. Upon inspection of the aircraft the following damage was noted. Number 3 cylinder had sheared away from the engine case, the number 3 connecting rod was disconnected from the crank shaft and severe damage to the engine case was noted. The number 3 connecting rod cap was recovered. One rod bolt showed evidence of ductile overload and the other bolt pulled through the retaining nut with several of the nut threads still remaining on the bolt.
As the FAA filed it
(-23) THE AIRCRAFT WAS ENROUTE FROM SHERIDAN WY (KSHR) TO HAILEY ID (KSUN) AT APPROXIMATELLY 8500' AND 22 MILES SE OF HAILEY ID WHEN A MODERATE ENGINE VIBRATION WAS DETECTED BY THE PILOT. WITHIN 2-3 MINUTES THE VIBRATION BECAME SEVERE AND THE PILOT DECLARED AN EMERGENCY TO THE HAILEY TOWER. A LARGE VOLUME OF SMOKE WAS REPORTED COMING FROM THE LOWER ENGINE COWL. THE AIRCRAFT LANDED ON RUNWAY 31 WITHOUT FURTHER INCIDENT. UPON INSPECTION OF THE AIRCRAFT THE FOLLOWING DAMAGE WAS NOTED. NUMBER 3 CYLINDER HAD SHEARED AWAY FROM THE ENGINE CASE, THE NUMBER 3 CONNECTING ROD WAS DISCONNECTED FROM THE CRANK SHAFT AND SEVERE DAMAGE TO THE ENGINE CASE WAS NOTED. THE NUMBER 3 CONNECTING ROD CAP WAS RECOVERED. ONE ROD BOLT SHOWED EVIDENCE OF DUCTILE OVERLOAD AND THE OTHER BOLT PULLED THROUGH THE RETAINING NUT WITH SEVERAL OF THE NUT THREADS STILL REMAINING ON THE BOLT.