As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT TO PICK UP A PATIENT, THE NUMBER 2 FIRE WARNING LIGHT AND AUDIO CAME ON INTERMITTENTLY. DIVERTED TO NEAREST AIRPORT, SHUTDOWN AND INSPECTED THE ENGINE COMPARTMENT. NO SIGNS OF FIRE. NOTIFIED MECHANIC. INSPECTED AIRCRAFT NO SIGNS OF FIRE DAMAGE. REPLACED BOTH FIRE DETECTORS. P/N 3119366-01 AND 3119367-01 FUNCTION CHECKED GOOD.