As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: SMOKE FORWARD CARGO DETECTOR IN CRUISE FLIGHT MOMENTARILY (NO 2) THIRD TIME CONTINUOUS DISCHARGED BOTTLE PER ECAM. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO BOI WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED FORWARD CARGO COMPARTMENT FOR DAMAGE SMOKE CONTAMINATION WITH NONE FOUND. MAINTENANCE REPLACED ALL FOUR SMOKE DETECTORS IN THE FORWARD CARGO COMPARTMENT AND ACCOMPLISHED A SATISFACTORY BITE TEST PER AMM 26-16-15.