What was found
AFTER TAKEOFF CREW NOTED DOORS NOT LATCHED LIGHT ILLUMINATED. CREW CYCLED LANDING GEAR AND LIGHT REMAINED ILLUMINATED. AFTER APPROX 30 MINUTES LIGHT EXTINGUISHED. AFTER AN UNEVENTFUL LANDING IN BFI MAINTENANCE INSPECTED SYSTEM AND DETERMINED PROBLEM IS INDICATION ONLY. ALL WORK PERFORMED PER APPLICABLE MANUALS. ITEM WAS DEFERRED UNDER MEL AND AIRCRAFT RETURNED TO SERVICE. IN ORDER TO CLEAR THIS MEL ITEM MAINTENANCE REMOVED AND REPLACED THE RT MLG DOOR ACTUATOR CONTROL VALVE. AFTER NUMEROUS OPERATIONAL CHECKS IT WAS DETERMINED THIS ITEM IS CORRECTED. ALL WORK COMPLETED PER APPLICABLE MANUALS, MEL ITEM CLEARED AND AIRCRAFT RETURNED TO SERVICE.