As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT WAS ON APPROACH AND NOTICED GEAR UNSAFE LIGHT FAILED TO EXTINGUISH ON GEAR DOWN SELECTION. GREEN LIGHT ALSO FAILED TO ILLUMINATE FOR NOSE LANDING GEAR. PILOT DIVERTED & LANDED WITHOUT INCIDENT. MX ENSURED GEAR WAS LOCKED AND TOWED TO HANGAR FOR INSP AND FOUND THE LANDING GEAR DOWNLOCK SWITCH TO BE INOPERATIVE. REPLACED SWITCH, PN 487-862 IAW SRM 7-36; SWUNG GEAR MULTIPLE TIMES WITH GOOD RESULTS. SUBSEQUENT OPS CHECK-FLIGHT GOOD - ACFT RETURNED TO SERVICE.