As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE FIRE WARNING DURING CLIMB OUT AT 13000 FT. N1'S 103.5. FIRE WARNING EXTINGUISHED WHEN THROTTLE WAS RETARDED. COMPLIED WITH QRH 4-1-1-1. INSP NR 1 ENG FOUND BLOWN DUCT FOR HP RECOUP AIR ASSY. REPLACED NR 1 ENG HP RECOUP AIR ASSY DUCT WITH SERVICABLE DUCT ASSY PN 9054M52G01 REF MM 75-15, LEAK CHECKED OK WITH HIGH POWER RUNS REF JRH.