What was found
WHEN GEAR WAS RETRACTED ON TAKEOFF, THE GEAR DOOR OPEN AND RIGHT MAIN GEAR UNSAFE LIGHTS REMAINED ILLUMINATED. APPROXIMATELY 15 SECONDS LATER THE SPEED BRAKE SPOILER HANDLE SOUNDED AS THOUGH IT CYCLED TO AIR MODE AND BOTH GEAR UNSAFE LIGHTS EXTINGUISHED. THE FLIGHT WAS CONTINUED WITHOUT FURTHER PROBLEMS. MAINTENANCE FOUND THE RT MLG RETRACT ACTUATOR AT FAULT. THE ACTUATOR WAS REPLACED PER MM 32-32-2. A GEAR SWING WAS PERFORMED AND GEAR OPERATION CHECKED GOOD. PART TOTAL CYCLES, 14,545.