What was found
ON APPROACH, BEFORE LANDING CHECK LIST COMPLETE, AT 200' ABOVE THE GROUND WE HAD A "TO LOW GEAR]" ALERT FWD PANEL SHOWED 3 GREEN, OVERHEAD INITIALLY SHOWED 3 GREEN BUT NOW SHOWED NO NOSE GEAR GREEN. WENT AROUND AND THE ACFT SHOWED 3 GREEN ON BOTH PANELS THROUGH LANDING. ENT BY: 715474 RPT BY: 078544 SHGN 17DEC08 16:30 YVR R IN WORK. REPLACED SWITCH 79GB ON NOSE GEAR TELESCOPIC DRAG STRUT IAW MM 32-00-00-4, OPS CHECKED IAW MM 32-61-00-5. CHECKED GOOD, 3 GREEN ARROWS ON FWD PANEL AND ON OVERHEAD PANEL ARE ON.