What was found
AFTER TAKEOFF DURING GEAR RETRACTION, RT MLG RED LIGHT FRONT AND REAR PANEL REMAINED ILLUMINATED. QRH COMPLIED W/ RECYCLED GEAR AT 180 KNOTS. LIGHTS REMAINED ILLUMINATED AND EVENTUALLY EXTINGUISHED IN APPROX 5 MINUTES. CHECKED PROX SENSORS AND WIRING, ALL LOOK OK. PERFORMED BITE TEST ON PROX ELECTRONIC UNIT NO FAULTS. CHECKED SENSOR GAP PER M/M 32-34-03-02, ALL WITHIN LIMITS. INSTALLED GEAR PINS, REMOVED TARGET SENSOR FROM RLG DOWN LOCK, SIMULATED FLIGHT CONDITIONS WITH GEAR UP. PER TAFI 32-30-00 CODE "AL" PRESSURIZED HYDRAULIC SYSTEM AND CHECKED ALL COMPONENTS FOR BYPASSING OR INTERNAL LEAKAGE. ALL CHECK OK. REMOVED AND REPLACED RIGHT MAIN LANDING GEAR DOWNLOCK ACTUATOR RESTRICTOR VALVE PER MM 32