As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH GEAR HANDLE DOWN, GREEN LIGHTS NOT ON, RED LIGHTS NOT ON EITHER. ACCOMPLISHED ABNORMAL PROCEDURE, STILL NO LIGHTS. OTHER CHECKLIST ITEMS INDICATED ALL GEAR WAS DOWN AND LOCKED. FOUND GEAR WARNING INTERLOCK CIRCUIT BREAKER INTERMITTENT (D-3). REPLACED CIRCUIT BREAKER AND PROXIMITY SENSOR BOX. SYSTEM OPS CHECKED GOOD IAW MM.