As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 500-HOUR T INSP' INSPECTION OF 3 OF THE 6 ENGINE FIRE DETECTORS WERE FOUND DEFECTED PER TURBOMECA MM CHAP 26-11-00 PARA 1 INSPECTION PROCEDURES. TWO WERE OVERHEATED AND ON ONE THE OHMS WERE TOO LOW. SUBMITTER STATED THE OPERATOR BELIEVES THEY SHOULD HAVE HAD LONGER COMPONENT LIFE SINCE THIS IS THE ONLY FORM OF FIRE PROTECTION FOR THE AIRCRAFT.