What was found
RMS - FLT DQ1 - EN ROUTE FROM CAI TO RMS, THE GEAR DOOR WARNING LIGHT ILLUMINATED DURING THE LANDING GEAR UPLATCH CHECK.. THE FLIGHT CREW CYCLED THE LANDING GEAR BUT THE WARNING INDICATION REMAINED THE SAME. THE FLIGHT CONTINUES TO RMS FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE LANDING GEAR DOORS WHICH REVEALED THE LEFT MAIN GEAR DOOR ACTUATOR DEFECTIVE. MAINTENANCE REPLACED THE GEAR DOOR ACTUATOR AND PERFORMED A SUCCESSFUL OPERATIONAL TEST. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)