What was found
PHX - FLT 1403 - AFTER TAKEOFF DFW DURING CLIMB-OUT, NOSE LANDING GEAR RED LIGHT ILLUMINATED FOR APPROXIMATELY THREE MINUTES AND THEN EXTINGUISHED WITH NO OTHER ABNORMAL INDICATIONS. AIRCRAFT PROCEEDED TO PHX AND LANDED WITHOUT INCIDENT. REPLACED NOSE LANDING GEAR UPLOCK SENSOR. ACCOMPLISHED NOSE LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)