What was found
RANDOM DEEP SHUDDER FELT INFLIGHT THROUGHOUT ENTIRE AIRCRAFT. SHUDDER OCCURRED NUMEROUS TIMES IN CLIMB, CRUISE, AND DESCENT FROM 15,000' T0 23,000'. ACTUATOR ELEVATOR ROD ENDS OUT OF LIMITS. REPLACED WORN ROD ENDS. PERFORMED ADJUSTMENT AND TEST. BOTH LT AND RT ELEVATOR FREE PLAY WITHIN LIMITS.