What was found
(CAN) SHORTLY AFTER SELECTING GEAR UP, RIGHT MAIN LANDING GEAR LIGHT CAME ON. (GEAR UNSAFE LIGHT OUT) LANDING RECYCLED LIGHT WENT OUT. AFTER ANOTHER SHORT PERIOD LEFT GEAR LIGHT CAME ON AND THEN WENT OUT. NORMAL LANDING CARRIED OUT. MAINTENANCE CHECK REVEALED NOSE GEAR LIGHT AND RH GEAR LIGHT RECEPTACLE BASES FAULTY. BOTH LIGHT BASES REPLACED. RETRACTION TEST CARRIED OUT SERVICEABLE.