As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3200 - NOTIFIED BY MAINTENANCE VIA GRD LINE. VIBRATION, SIMILAR TO LIGHT TURBULENCE, AT SPEEDS 235 KTS TO 250 KTS POWER SETTING SEEMS IRRELEVANT. CREW DID NOT CONTACT MOC. RAID BUSHING IN ELEVATOR BALANCED ALL FLIGHT CONTROL REPLACED HARDWARE IN ELEVATOR TRIM TABS, RERIGGED FLIGHT CONTROLS TRIAD RELEASED. AIRCRAFT RETURNED TO SERVICE (M)