As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YD 1 STATUS MESSAGE APPEARED AND WOULD NOT RE-ENGAGE. CONTINUOUS AIRCRAFT YAWING PULSATION IN THE RUDDER PEDALS. (FLT 7426) REPLACED NR 1 FCC IAW AMM 22-12-14. ALL FCC OPS TESTS GOOD. YAW DAMPER TEST GOOD. NO UNUSUAL RUDDER PEDAL MOVEMENTS NOTED. NO REPORT CODES PRESENT. P/N ON/OFF 622-9815-904 S/N ON 2623 S/N OFF 63XG