What was found
HNL - FLT 522 - FROM LOG PAGE 122617: ACFT HAS NOTICEABLE WOBBLE ABOVE 290 KNOTS CL/DESCENT/CRUISE WITHOUT AP YAW DAMPER OR RUDDER POWER. DUE TO NOTICEABLE AC WOBBLE ABOVE 290 KNOTS, CL/DESCENT/CRUISE REF LOG PAGE 122617 TEST FLIGHT REQUIRED. REPLACED RUDDER HYD PRESS SHUT-OFF VALVE PER MM 27-20. OP CHECK OK. TEST FLIGHT ACCOMPLISHED. CONTROLS NORMAL IN ALL CONFIGURATIONS AND AT ALL SPEEDS UP TO 330 KNOTS. (X)