What was found
DFW - FLT NR 102 - DURING APPROACH TO DFW, WHEN LANDING GEAR EXTENDED, NOSE LANDING GEAR EXPERIENCED LOUD CLUNK AND RED LIGHT REMAINED ILLUMINATED. RECYCLED LANDING GEAR WITH SAME RESULTS. CONFIRMED NOSE LANDING GEAR DOWN AND LOCKED AND AIRCRAFT LANDED DFW WITHOUT INCIDENT. REPLACED NOSE LANDING GEAR STRUT SEALS AND SERVICED NOSE STRUT WITH OIL AND NITROGEN. ALSO, REPLACED LANDING GEAR PROXIMITY SWITCH CONTROL UNIT. ACCOMPLISHED LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND. SYSTEM CHECKED NORMAL OPERATION. (M)