As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1503 - CLT-ATL - DIVERSION / FIRE INDICATION - CARGO SMOKE DISCHARGE LIGHTS ILLUMINATED, "BOTH" IN FLIGHT. REMOVED AND REPLACED FIRE EXTINGUISHER BOTTLE IN FORWARD CARGO COMPARTMENT PER AMM 26-23-41. PERFORMED FUNCTIONAL TEST AND NO DEFECTS WERE NOTED.