What was found
DURING CLIMB OUT NOTICED A VIBRATION IN THE AIRCRAFT, MAINLY IN THE YOKE, VIBRATION INCREASED IN CLIMB FLIGHT AND ALSO IN CRUISE FLIGHT. REMOVED AND REPLACED LT ELEVATOR IAW 27-31-40-4 PN ON 7255201-607, PN OFF 7255201-605. SN ON 0047-607, SN OFF 0058-605. OPS CHECK GOOD.