What was found
FLT#1834, PAP-JFK. (AIRCRAFT DECLARED AN EMERGENCY). 'NOSEGEAR "UNLOCKED " LIGHT STARTED FLASHING ABOUT(.5 HOURS INTO FLIGHT. NEXT, IT CAME ON STEADY W/"L/G CTRL & RED TRIANGLE ON THE ECAM WHEEL PAGE. NEXT, THE "LGCIU (2) 'ECAM MESSAGE CAME ON. UNEVENTFUL LANDING, THEN 'L/G SYS DISAGREE ' ECAM MESSAGE WHILE TAXING IN; REF LOG PAGES #3406330 (REMOVED AND REPLACED NLG PROX SENSOR 913GA AS PER AMM 32-31-73. OPS CHECK AND SEALANT APPLICATION ARE REQUIRED. REFER TO ITEM #2. ITEM #2: LGCIU 1 &2 BITE TEST CHECK GOOD IAW AMM REF 32-69-00740-001. ACCOMPLISHED FUNCTIONAL TEST OF THE NORMAL EXT AND RET OF THE NLG IAW AMM REF 32-31-00-720-003-A CHECKED GOOD. NO FAULTS NOTED. APPLIED SEALANT TO PROX SENSORS 12 & 13GA REF AMM 32-31-73.),3406332 (RE-CHECKED CIRCUIT IAW ESPM REF'S 20-52-21 & 20-52-22. USED AWM REF 32-31-05 P0002 SHT 1. ALL WIRES CHECKED GOOD. NO ABNORMAL READINGS WERE NOTED.) & 3406333 (REMOVED AND REPLACED NLG UPLK PROX SENSOR 12GA REF AMM 32-31-73. LGCIU 1&2 BITE TESTS CHECK GOOD NOW. ACCOMPLISHED FUNCTIONAL TEST OF THE NORMAL EXT& RET OF THE NLG. OSP CHECK GOOD NO FAULTS NOTED. AMM REF 32-31-00-720-003-A.)FOR FINDINGS AND CORRECTIVE ACTIONS. ALL OPS CHECKS ARE GOOD. NO FAULTS NOTED. AIRCRAFT OK FOR SERVICE.'