What was found
DURING CLIMB, NOTICEABLE VIBRATION IN CONTROL YOKE, MADE WORSE DURING ANY CONTROL INPUT. WAS MUCH IMPROVED AT CRUISE. VIBRATION IN BOTH YOKES AND WORST IN CLIMB AND HIGH POWER SETTINGS. REMOVED FROM SERVICE. INSPECTION PERFORMED AS WELL AS PROP 1 & 2 BALANCING, AND NR 2 PROP BLADE RE-TORQUE. NO FURTHER ISSUES NOTED. NEW BALANCE SOLUTION INSTALLED ON NR 1 & 2 PROP, AND NO MOVEMENT NOTED DURING BLADE RE-TORQUE. PREVIOUSLY NOTED INSPECTION INCLUDES CHAP 5 INSPECTION. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.