As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
: DURING CRUISE FLIGHT #1 ENG FIRE LIGHT, ALONG WITH AUDIO FLASHED ON FOR ABOUT ONE SECOND. NO SECONDARY INDICATIONS OF FIRE OBSERVED. ELECTED TO ABORT FLIGHT. SAME INDICATION OCCURRED THREE MORE TIMES PRIOR TO LANDING. INSPECTED #1 FLAME DECTECTOR FOUND FAULTY. REPLACED DECTECTOR P/N 76306-07902-104 WITH NEW DECTECTOR P/N SAME. ALL WORK DONE I/R/T SIKORSKY S76 MM CHAP 26-11-01 OPS CK SYSTEM FOUND GOOD.