What was found
DURING INSTRUMENT APPROACH, DURING MLG EXTENSION, LT MLG WAS A YELLOW X & GEAR DISAGREE L CAS MESSEGE APPEARED. DID A MISSED APPROACH, RAISED MLG & CLIMBED TO HOLDING PATTERN & RAN CHECK LIST. LOWERED HANDLE. UPON LOWERING MLG HANDLE, ALL 3 MLG HAD A GREEN DOWN & LOCKED LIGHT. STOPPED THERE, CLIMBED TO 10K & CONTACTED FODM & MX CONTROL. ALL AGREED TO STOP CHKLIST & CONTINUE THE LANDING, MLG DOWN TO A NORMAL LANDING MADE. DID NOT DECLARE AN EMERGENCY NOR REQUIRE ANY SPECIAL HANDLING. DID NOT BLOW DOWN THE GEAR. SENT ARES DOWNLOADS FOR REVIEW, TEAM680 INFORMED US THAT LT UPLOCK SWITCH IS CAUSE OF YELLOW X. R & R LT MLG UPLOCK SWITCH SG007. RIGGED & CONFIRMED RIGGING AS REQUIRED. DISCONNECTED PG003 & FOUND DEBRIS IN CONNECTOR. CLEANED DEBRIS & RANG WIRING THROUGH SWITCH, SWITCH CHECKED GOOD. CHECKED ALL PINS. RECONNECTED PG0003 & REMOVED PG007 & CLEANED & RECONNECTED. OPS CHKD GOOD. PERFORMED SEVERAL MLG SWINGS WHILE MONITORING CMC DATA, ENSURED MLG READS UP & DOWN AS REQUIRED.3 GREEN EACH TIME ON DOWN & LOCKED FOR MLG SWINGS. WORK DONE IAW AMM 32-32-00