What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
PIC reported the aircraft's engine suddenly began to shake violently while in cruise flight for 5 seconds before the engine shut down un-commanded. The PIC executed a power off landing in a field near shannon airport (kezf). During the on-scene FAA investigation, 2 of the 3 propeller blades had separated from the propeller hub and could not be located at the accident scene. The violent nature of the in-flight engine vibrations and subsequent engine failure was caused by the in-flight separation of the propeller blades at a cruise power setting.
As the FAA filed it
PIC REPORTED THE AIRCRAFT'S ENGINE SUDDENLY BEGAN TO SHAKE VIOLENTLY WHILE IN CRUISE FLIGHT FOR 5 SECONDS BEFORE THE ENGINE SHUT DOWN UN-COMMANDED. THE PIC EXECUTED A POWER OFF LANDING IN A FIELD NEAR SHANNON AIRPORT (KEZF). DURING THE ON-SCENE FAA INVESTIGATION, 2 OF THE 3 PROPELLER BLADES HAD SEPARATED FROM THE PROPELLER HUB AND COULD NOT BE LOCATED AT THE ACCIDENT SCENE. THE VIOLENT NATURE OF THE IN-FLIGHT ENGINE VIBRATIONS AND SUBSEQUENT ENGINE FAILURE WAS CAUSED BY THE IN-FLIGHT SEPARATION OF THE PROPELLER BLADES AT A CRUISE POWER SETTING.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.