What was found
ACFT ROLLED 15*, RT WING DOWN WITH CLEAN CONFIG TRIM (AILERON& RUDDER) WITH FLAPS 40* & GEAR DOWN AFTER HANDS OFF CONTROLS FOR 10 SECS. GROUNDED - YES. PERFORMED FUNCTIONAL TEST OF RUDDER CONTROL SYS & RUDDER TRIM SYS IAW AMM 27-20-00-720-802/803. TESTED WITHIN LIMITS. MEASURED RUDDER SURFACE TRAVEL WITHIN LIMITS IAW SUBTASK 27-20-00-830-005. YAW DAMPER SENSOR READ OUT FAILED. REPLACED YAW DAMPER. TESTED OK. FUNCTIONAL CHK FLT WILL BE REQUIRED IAW GPM 13.7.