What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: pilot reported that aircraft encountered heavy airframe vibration while at cruise flight at an altitude of 4500' AGL. Power was reduced and an uneventful landing was accomplished on a nearby highway. An inspection of the aircraft disclosed that a piece of the engine exhaust pipe separated from the powerplant exhaust system because of fatigue failure. The dislodged part struck the propeller causing damage to the tip of the propeller. This incident is closed with this report.
As the FAA filed it
NARRATIVE: PILOT REPORTED THAT AIRCRAFT ENCOUNTERED HEAVY AIRFRAME VIBRATION WHILE AT CRUISE FLIGHT AT AN ALTITUDE OF 4500' AGL. POWER WAS REDUCED AND AN UNEVENTFUL LANDING WAS ACCOMPLISHED ON A NEARBY HIGHWAY. AN INSPECTION OF THE AIRCRAFT DISCLOSED THAT A PIECE OF THE ENGINE EXHAUST PIPE SEPARATED FROM THE POWERPLANT EXHAUST SYSTEM BECAUSE OF FATIGUE FAILURE. THE DISLODGED PART STRUCK THE PROPELLER CAUSING DAMAGE TO THE TIP OF THE PROPELLER. THIS INCIDENT IS CLOSED WITH THIS REPORT.