What was found
VIBRATION FELT DURING CLIMB DESCENT AND APPROACH WITH AUTO PILOT 1 OR 2 ON IT STOPPED WITH AP. OFF AND SLIGHT RUDDER PRESSURE. PERFORMED GVI OF TAIL SECTION NO DISCREPANCIES NOTED. PERFORMED OPS TEST OF RUDDER TRIM PER 27-22-00 OPS TEST GOOD. PER TSM 05-50-00-810-801-A INTERPRETED VIBRATION SHEET ON THE DECISION TABLE AND RESULTS POINT TO THE RUDDER NEXT TASK TO BE PERFORMED IS 27-20-00-810-802-A (AIRFRAME VIBRATION DUE TO THE RUDDER) REF LOG PAGE 2773151-1 FOR CONTINUE TROUBLESHOOTING.