As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 314 FLL-IAD, AIR RETURN TO FLL, ON CLIMBOUT INCREASING THROUGH 290 KTS, EXCESSIVE VIBRATION WAS NOTED IN THE TAIL OF THE AIRCRAFT. AIRCRAFT VIB SURVEY SHOWED ELEVATORS AS SOURCE. ACCOMPLISHED TSM 27-34-00 AND FOUND RT INBOARD YELLOW ACTR AT 8.16 MM - OUT OF LIMITS. RT OUTBOARD ACTR AT 6 MM. LT INBOARD GREEN ACTR AT 6MM AND LT OUTBOARD BLUE ACTR AT 2.39 MM. REMOVED AND REPLACED RT INBOARD YELLOW SERVO CTL ACTR PER AMM 27-34-51, OPS CHECK GOOD.