As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO SAN CREW NOTICED NOSE LANDING GEAR "GREEN" INDICATING LIGHTS NOT ILLUMINATED. CREW FOLLOWED COMPANY PROCEDURE AND RETURNED TO SAN FOR AN UNEVENTFUL LANDING. INSPECTION REVEALED THE NOSE GEAR PROXIMITY SWITCH CONNECTOR HAD BECOME INSECURE. MAINTENANCE SECURED THE CONNECTOR IN ACCORDANCE WITH THE AIRCRAFT MAINTENANCE MANUAL PERFORMED AN OPERATIONAL CHECKOUT OF THE SYSTEM AND RETURNED THE AIRCRAFT TO SERVICE.