What was found
UNCOMMANDED RUDDER MOVEMENTS, WITH YAW DAMP OFF OR ON. DISCONNECTED AP/ YAW DAMPER, ACFT CONTINUED TO MAKE UNCOMMANDED RUDDER INPUTS. ACFT DIVERTED, EMERGENCY DECLARED. COMPLIED WITH FDR DOWNLOAD IAW AMM 31-31-01. REMOVED & REPLACED NR 1 AND NR 2 YAW DAMPER ACTUATORS IAW AMM 22-22-01, OPS & LEAK CHECKED GOOD. R & R NR 1 AND NR 2 FCC CARDS IAW AMM 22-12-14, OP'S CHECKED GOOD. R & R AILERON & RUDDER TRIM CONTROL PANEL IAW AMM 27-12-10, OP'S CHECKED GOOD. COMPLIED WITH OP'S & LEAK CHECK OF RUDDER PCUS' NR 1, NR 2, AND NR 3 IAW AMM 27-23-01. NO DEFECTS NOTED. ACFT OK FOR SERVICE.