What was found
FLT#1463, LAX-SJD. (AIRCRAFT PERFORMED AN AIR TURN BACK TO LAX) ' AFTER ROTATION & CALL FOR GEAR UP. THE NOSE DOOR OR GEAR DID NOT CLOSE OR RETRACT. ECAM ALERT CLIMBED TO 1000' & DOOR OR GEAR RETRACTED. NO FURTHER INDICATION. CONTACT MX TOLD T TO RETURN TO LAX; AS PER PFR T/S TO NLG UPLOCK ASSY FIN 2530GM. REMOVED AND REPLACED AS PER AMM 32-31-21. PERFORMED GEAR NOSE-ONLY SWING AS PER AMM 32-31-00. NO FAULTS NO ECAM. A/C OK FOR SERVICE.'