As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POSSIBLE MFG PARTS NOT TO SPECIFICATIONS. MFG OF ORIGIN UNKNOWN. (GENERIC) LESS THAN 7 FLT HOURS PER LAMP (AVERAGE) FROM INSTALLATION TO REPLACEMENT. HAVE REPLACED AT LEAST 5 LAMPS PER AC IN LESS THAN 30 FLIGHT HOURS EACH. NO CIRCUIT BREAKERS POPPING. TROUBLESHOOTING SHOWS NO DISCREPANCIES ON EITHER AC. NO MFG INFO ON PARTS BOX OR ON THE PART COPY OF ORIGINAL CERTIFICATION ATTACHED. (K)