What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Flight 80 enroute to buffalo. Left engine vibration indication noted @ cruise 2.3 to 2.7 to 3.2 ips. Aircraft diverted to pit; engine secured. Comair maintenance personnel inspected aircraft at pit and lubed tangs. No defects noted during ferry flight to cvg on 10/15/03. On 10/16/03 vibration reappeared and engine was replaced. Reason for engine vibration is undetermined at this time. Engine is set to go to ge strother (wichita) for inspection and test cell analysis.
As the FAA filed it
(-23) FLIGHT 80 ENROUTE TO BUFFALO. LEFT ENGINE VIBRATION INDICATION NOTED @ CRUISE 2.3 TO 2.7 TO 3.2 IPS. AIRCRAFT DIVERTED TO PIT; ENGINE SECURED. COMAIR MAINTENANCE PERSONNEL INSPECTED AIRCRAFT AT PIT AND LUBED TANGS. NO DEFECTS NOTED DURING FERRY FLIGHT TO CVG ON 10/15/03. ON 10/16/03 VIBRATION REAPPEARED AND ENGINE WAS REPLACED. REASON FOR ENGINE VIBRATION IS UNDETERMINED AT THIS TIME. ENGINE IS SET TO GO TO GE STROTHER (WICHITA) FOR INSPECTION AND TEST CELL ANALYSIS.