What was found
ON GEAR RETRACTION RED UNLOCK LIGHT ON GEAR. EXTENDED GEAR, 3 GREENS, NO RED LANDED UNEVENTFULLY. TROUBLESHOT LANDING GEAR SYSTEM. FOUND NLG STRUT NOT EXTENDING COMPLETELY, CAUSING UPLOCK LOCK TO CONTACT UPLOCK ROLLERS NOT ALLOWING GEAR TO RETRACT. DISASSEMBLED NOSE GEAR STRUT AND REBUILT STRUT IAW COMPONENT MM 32-20-01. REASSEMBLED NLG AS REQUIRED. SERVICED NOSE STRUT IAW MM 12-14-00. PERFORMED OP'S CHECK OF LANDING GEAR SYSTEM. OPS CHECK GOOD.