What was found
GEAR DISAGREE ON LANDING IN SYR. NOSE GEAR WAS NOT COMING DOWN. RAN QRH, AFTER CYCLING GEAR 2 TIMES NOSE GEAR DID COME DOWN. NORMAL LANDING CONDUCTED (FLIGHT 4170 - FILED CLOSED) TROUBLESHOT GEAR DISAGREE WITH NO EXTENSION OF NLG PER CRJ900 FIM 32-60-00. FOUND B1-007417 FLAGGING NLG#1 DOWN SENSOR. REMOVED AND REPLACE LH NLG WHEEL WELL HARNESS ASSY IAW CRJ900 AMM 32-61-05. PERFORMED 5 EXTENSION AND RETRACTIONS OF THE LANDING GEAR WITH NO DEFECTS NOTED. OPS CHECK GOOD.