What was found
CLE - FLT 957 - DURING CLIMB AND GEAR RETRACTION, CREW HEARD A LOUD BANG FROM THE NOSE WHEEL WELL FOLLOWED BY A CONTINUOUS VIBRATION IN THE COCKPIT. CAPTAIN DECIDED TO RETURN TO FIELD AT CLE AND DECLARE AN EMERGENCY. FLIGHT LANDED WITHOUT FURTHER INCIDENT. AFTER LANDING, MAINTENANCE MET THE AIRCRAFT, PINNED THE GEAR AND TAXIED IN. MAINTENANCE FOUND THE LEFT NOSE GEAR DOOR FIXED OPERATOR LINK BROKEN. REMOVED AND REPLACED OPERATOR LINK AND SWUNG NOSE GEAR PER MM 32-33-61. OPERATION CHECK NORMAL. (M)