What was found
ON CONFIGURING TO LAND, WHEN HANDLE LOWERED, RECEIVED UNSAFE NLG INDICATION ON PANELS, & ECAM. POSITION DETECTOR SWITCHED FROM NR 2 - NR 1, SAME RESULTS. LOW APPROACH. COMPLIED WITH QRH. NLG GREEN INDICATION AFTER MANUAL EXTENSION. DECLARED EMERGENCY, UNEVENTFUL LANDING, COMPLETED NLG UPLOCK INSTALL IAW AMM 32-31-21-04. LUBRICATED NLG, IAW AMM 12-22-32-00. PERFORMED NLG SWING SEVERAL TIMES ON SYSTEMS NR 1 & 2. OPS CHECKED GOOD. INDICATIONS NORMAL, NO DEFECTS NOTED IAW AMM 32-31-00-05. PERFORMED LANDING GEAR FREE FALL TEST, IAW AMM 32-33-00-5. OPS CHECKS NORMAL. A/C OK FOR SERVICE.