What was found
DFW - FLT 0455 - DURING CLIMB-OUT, GEAR SELECTED UP, THE RED NOSE GEAR LIGHT REMAINED ILLUMINATED FOR APPROXIMATELY 4 MINUTES AFTER TAKEOFF. AIRCRAFT AIR INTERRUPTED AND RETURNED DFW AND LANDED WITHOUT INCIDENT. REPLACED NOSE GEAR UP SENSOR AND PERFORMED NOSE GEAR SWING AND POSITION CHECK WITH NORMAL RESULTS. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)