What was found
DURING CLIMB CREW RECEIVED R FADEC CAUTION MESSAGE. CREW COMPLIED WITH AOM VOL 1 PROCEDURES AND RETURNED TO STL WITHOUT INCIDENT. REMOVED AND REPLACED RT ENGINE FADEC IAW AMM 73-21-01. GROUND RAN AIRCRAFT NO FAULTS NOTED AT THIS TIME. ALSO NO CURRENT FAULTS ON MDC. AIRCRAFT RETURN TO SERVICE PERFORMED FIM PROCEDURE REF FIM 73-21-00. PERFORMED THREE ENGINE STARTS WITH CREW NO DEFECTS NOTED. A/C OK FOR SERVICE.