What was found
PHL - FLT 1922 - AFTER GEAR RETRACTION, WITH GEAR HANDLE IN 'UP' POSITION, THE NOSE GEAR RED LIGHT REMAINED ILLUMINATED. CREW EXTENDED THE GEAR AND RECEIVED THREE GREEN LIGHTS. CREW RETRACTED GEAR AND AGAIN RECEIVED THE NOSE GEAR RED LIGHT. CREW DECIDED TO RETURN TO PHL. FLIGHT LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE NOSE LANDING GEAR UPLOCK SENSOR AND THE E-11 M983 PROXIMITY CARD (P/N 65-58250-29). ACCOMPLISHED GEAR SWING. OPERATIONAL CHECK GOOD. (M)