As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - FLT 45 - EN ROUTE JFK-SFO - DETECTED FAILURE OF BOTH RIGHT SIDE ENGINE FIRE LOOP WARNING SYSTEM. AIR INTERUPTED, RETURNED JFK AND LANDED WITHOUT FURTHER INCIDENT. REPLACED RIGHT SIDE ENGINE LP 2 DETECTOR. PERFORMED LOOP RESISTANT CHECK. ACCOMPLISHED FIRE WARNING TEST PER THE MM. NO DEFECTS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)