What was found
HNL - FLT 524 - FROM LOG PAGE 124685: AT AIRSPEEDS GREATER THAN 300 KIAS, THE ACFT HAS A RUMBLE AND WOBBLE THAT IS MORE PRONOUNCED AT WEIGHTS LESS THAN 95,000 POUNDS. RUMBLE/WOBBLE OCCURS WITH OR WITHOUT AUTOPILOT ON. RUDDER SERVO WITH YAW DAMPER ON SHOWS A BACKGROUND FLUCTUATION THAT DISAPPEARS WITH YAW DAMPER OFF. INSPECTED ALL FLIGHT CONTROLS AND SURFACES OF A/C. FOUND RUDDER CONTROL TAB ROD END BEARINGS WORN. REPLACED BOTH END ASSYS. OPS AND RIG CHECK OK PER 27-20-2, DC-9 MM. (X)