As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE-N/A, EN ROUNTE DID A LIGHT TEST AND OBSERVE RIGHT MAIN GEAR LIGHT INOP. CALLED MMOC TO CHANGE LIGHTS AND OBSERVED BOTH MAIN GEAR LIGHTS WERE INOP. DID A FLY-BY IN DSM. AIRCRAFT NEEDS SPARE BULBS (387). BITE PSEU AND FOUND NO FAULTS. REMOVED AND REPLACED LT AND RT MAIN GEAR IND LAMP ASSY'S IAW MM33-16-02. OP CK NORMAL. (P/N 674-1033-2206)