As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DROPPING A PATIENT OFF AT AIRPORT, ACFT DEPARTED THE AIRPORT AND WAS ON INITIAL CLIMB OUT WHEN THE PILOT REPORTED A " FIRE DETECT" LIGHT ILLUMINATED ON THE CAP PANEL, AT THIS POINT THE THE PILOT RETURNED TO THE AIRPORT AND LANDED WITHOUT INCIDENT. WHEN THE MECHANIC ARRIVED AND INSPECTED THE ACFT HE FOUND THAT THE FIRE DETECT LOOP HAD BROKEN UNDER ONE OF THE CLAPS THAT HOLDS IT TO THE DECK. AFTER REPLACING THE FIRE DETECT LOOP AN OPS CHECK WAS PERFORMED WITH NO DEFECTS NOTED.