What was found
ELEV ASYM EICAS MESSAGE IS DISPLAYED. THE FAILED ELEVATOR ASYMMETRY LIMITER ACTUATOR WAS DETECTED BY THE STABILIZER TRIM/ELEVATOR ASYMMETRY MODULE (SAM). A DISCREPANCY IN THE ACTUATOR FAULT LOGIC CAUSES THE ELEV ASYM STATUS /MAINTENANCE MESSAGES TO DISPLAY. REMOVED AND REPLACED THE SUBJECT LIMITER ACTUATOR WITH NEW SERVICEABLE UNIT. SYSTEM WAS OPS CHECKED PER MM 27-31-03 WITH NO FAULTS OR DISCREPANCIES FOUND. THIS ITEM TO BE TREATED AS A ONE-TIME ISOLATED INCIDENT. THERE IS NO SIGNIFICANT HISTORY OF MAINTENANCE FAILURES FOR THIS COMPONENT. ENGINEERING WILL MONITOR FUTURE RELATED DISCREPANCIES AND, IF REQUIRED, MODIFY THE EXISTING MAINTENANCE PROGRAM.