As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MODERATE VIBRATION REPORTED IN THE AFT AREA AFTER T/O DURING CLIMB-FOR CORRECTIVE ACTION PLEASE REFERENCE LOG BOOK PAGES 3629277-2, 369277-1 AND 3629278-1 A/C OK FOR CONT. SVC. REMOVED AND REPLACED RUDDER SERVO CONTROL (1025GM)IAW AMM 27-24-51. ALL CHECKS AND LEAK CHECK OK.