What was found
UNSAFE NOSE GEAR INDICATION. 2 GREEN 1 RED INDICATION, NO AOA INDEXER. DURING THE VECTORS TO RUN THE CHECKLIST, THE GREEN NOSE INDICATION CAME ON WITH AOA INDEXER AFTER ABOUT 5 MINUTES. LANDING WAS UNEVENTFUL. FOUND INTERMITTENT PC BOARDS NZ004 AND NZ009. REMOVED AND REPLACED BOTH BOARDS WITH NEW. SYS OPS CHECKS GOOD REF MM 32-61-00, REMOVED PCB-LANDING GEAR CONT NZ009 PN 6618735-1, SN 0127 INOPERATIVE.