As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW RECEIVED A BAGGAGE COMPARTMENT FIRE WARNING IN FLIGHT. FLIGHT CREW FOLLOWED CHECKLIST PROCEDURE WITH NO FIRE OR SMOKE DETECTED AND PULLED BAG COMP CIRCUIT BREAKER CONTINUING FLIGHT. BAGGAGE COMPARTMENT ACCESS FROM CABIN ALLOWED FOR ACTUAL INSPECTION. TROUBLE SHOT FALSE INDICATION TO A FAILED BAGGAGE SMOKE DETECTOR P/N FR2220 AND INSTALLED A REPAIRED UNIT. INSTALLATION AND OPERATIONAL CHECKS PERFORMED IN ACCORDANCE WITH AMM 26-10-21.