What was found
DURING FINAL APPROACH BOTH MAIN GEAR INDICATIONS, DID NOT SHOW DOWN AND LOCKED. AIRCRAFT DIVERTED TO SMF AND ACCOMPLISHED A QRH PROCEDURE. NO EMERGENCY WAS DECLARED, BUT CFR WAS ROLLED BY ATC. TROUBLESHOT MLG LIGHTS, FOUND RIGHT AND LEFT MAIN LIGHT BULBS INOP. REPLACED BULBS & PERFORMED GEAR FUNCTIONAL OP'S. CHECK SATISFACTORY RESULTS. WORK PERFORMED IAW CITATION 560XL MM, CHJP 32-60-00 &32-01-00-720. GEAR N2 BOTTLE WAS SERVICED IAW 560XL MM, CHP 12-13-01. THIS ITEM IS STILL UNDER INVESTIGATION.