As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CARGO FIRE WARNING SYS ACTIVATED ON LANDING. SUSPECT DUST INTAKE FROM RNWY. IAW CREW DEBRIEF, AFTER DUST CLEARED, MAIN CARGO SMOKE DETECTION CLEARED. PERFORMED MAIN CARGO SMOKE DETECTION TEST IAW MM 26-16-30-5. SYS TESTED NORMAL. ACFT OK FOR SERVICE.