As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, MAIN CARGO SMOKE WARNING ACTIVATED. SHORTLY THERE AFTER LIGHT EXTINGUISHED. APPROXIMATELY 1.5 TO 2 MINS LATER MAIN CARGO SMOKE WARNING RE-ACTIVATED. ALSO MIGRATED FROM ONE ZONE ILLUMINATED TO 2 ZONES (BULBS) ILLUMINATED. REPLACED ZONE 1 AND 2 DETECTION UNITS. ALL TESTS OK MM 26-16-001-0.