As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT MAIN CARGO LIGHT CAME ON. FALSE ALERT; FOUND NR 1 SMOKE DETECTOR AND NR 4 SMOKE DETECTOR LIGHTS REMAINED ILLUMINATED WHILE TESTING. ENTERED ON DMI 19008 AS PER MEL 26-6 CAT-C. RELAMP NR 1 AND NR 4 BEACON LIGHT BULB AT NR 1 AND NR 4 SMOKE DETECTOR; SYSTEMS OPERATIONAL CHECK NORMAL IN ACCORDANCE WITH MM 26-10-5. THIS CLEARED DMI 19008.