As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CONTROL SYSTEM ELECTRONICS UNIT EICAS MESSAGE RUDDER RATI O DISPLAYED T/S IAW FIM 27-21-00-815-804 NO FAULTS FOUND, RUDDER RATIO LIGHT ROTABLE PARTS CHANGE WAS INDICATED - TT # 1418509 SN OFF 3293 IS EXSTINGUSHED AND NO ECIAS MSG PRESENT. REPLACED BOTH LEFT AND TT # 1323248 SN OFF 0927 RIGHT RUDDER RATIO CHANGE UNITS AS PERCAUTIONARY . INSTALLED AND IPC REFERENCE # 27-21-00 OPS CHECK IAW AMM 27-21-00-735-188-01 STEP ''N'' , OPS CKS SATIS. IPC REFERENCE # 27-21-00