What was found
DURING FLIGHT, PILOT CALLED, REPORTED THAT RIGHT MAIN GEAR DOOR EXTENDED IN FLIGHT . ADVISED PILOT TO REDUC AIRSPEED TO PREVENT DAMAGE TO DOOR UPON LANDING . MAINTENANCE WAS DISPATCHED TO REPAIR AND INSPECT DOOR FOR OVERSPEED DAMAGE IAW MM. CLEANED TELESCOPIC ROD ON MAIN DOOR TEST. FLEW AIRCRAFT ABOVE GEAR SPEED, NO FURTHER PROBLEMS NOTED.