As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK/DECLARED EMERGENCY. CLIMBING THRU 11,000 FT AFT CARGO FIRE WARNING LIGHT CAME ON. DISCHARGED FIRE BOTTLE & LANDED. NO FIRE INDICATIONS NOTED. REMOVED AND REPLACED 3 EA SMOKE DETECTORS IN AFT CARGO BAY & FIRE WARNING CONTROL UNIT PER MM.