As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UVF - SHORTLY AFTER TAKEOFF, HAD AN AFT CARGO FIRE WARNING. DISCHARGED FIRE EXTINGUISHER BOTTLE AS PER PROCEDURE. LANDED UVF WITHOUT INCIDENT. REPLACED CARGO EXTINGUISHER BOTTLE, FORWARD CARGO A2 SMOKE DETECTOR, AFT CARGO ELECTRONIC UNIT, AND CARGO FIRE CONTROL PANEL. SYSTEM FIRE TEST CHECKED SATISFACTORY. SYSTEM GROUND CHECKED NORMAL OPERATIONS.