As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACT - FLT 3907 - CARGO SMOKE LIGHT CAME ON IN FLIGHT. DISCHARGED BOTH FIRE BOTTLES, DECLARED EMERGENCY AND DIVERTED TO ACT. REMOVED AND REPLACED FORWARD AND AFT CARGO SMOKE DETECTORS IAW MM 26-13-15. NO EVIDENCE OF FIRE. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)