What was found
CREW DECLARED AN EMERGENCY DUE TO A RUDDER FLUTTER DURING CLIMB OUT. ALL INDICATIONS WERE NORMAL. CREW SLOWED THE AIRCRAFT AS REQUIRED. FLIGHT CONTINUED TO DESTINATION AND LANDED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS GROUNDED. THE RUDDER FLUTTER STARTED AT 0.78 MACH IN CLIMB. SLOWED TO 0.75 AND RUDDER FLUTTER CEASED. FELT IN BOTH THE FIRST OFFICER`S AND CAPTAIN`S PEDALS. AUTOPILOT WAS ENGAGED AND STAYED. ACCOMPLISHED RUDDER AND ELEVATOR FREE PLAY CHECKS IAW JC 26L32527001, AND 26T00027006. ELEVATOR WITHIN LIMITS. RUDDER FAILED. REPLACED THREE RUDDER SERVO CONTROL EYE ENDS IAW JC 26L00027001. OPS CHECKED GOOD.