What was found
ON APPOACH AFTER LG EXTENDED NR 1 SYS IND 3 GREEN SYS 1 SELECTED ON SHORT FINAL TOO LOW GEAR WARNING INITIATED, SYS 2 OVERHEAD SHOWED NOSE GEAR NOT DOWN. LANDING GEAR CHECKED VISUALLY DOWN AND LOCKED ON SYS DETECTION 2. ALSO, SELECTED GAVE THE SAME WARNING.