As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRECAUTIONARY LANDING WAS MADE AFTER NOSE AND RT MLG LIGHTS FAILED TO LIGHT DURING MANUAL EXTENSION. LIGHT BULBS IN GEAR LIGHTS WERE FOUND BURNED OUT. LIGHT BULBS WERE REPLACED AND GEAR WAS OPERATIONALLY CHECKED THROUGH 6 CYCLES, CHECKED OKAY. COMPONENT PN 3086070843004. (X)