What was found
AT 1,000 FEET AGL, FIRE INDICATION NR 1 ENGINE. WHILE REDUCING THRUST, FIRE INDICATION EXTINGUISHED. COMPLETED ALL REQUIRED CHECKS AND LANDED NORMALLY. CHECKED NR 1 FIRE WARNING SYSTEM, FOUND LOWER 13TH STAGE DUCT LEAKING. REMOVED AND REPLACED DUCT PER M/M 36-10-0. RAN ENGINE TO TAKEOFF POWER, NO LEAKS NOTED. REMOVED AND REPLACED NR 1 FIRE BOTTLE AND DISCHARGE DISK PER M/M 26-21 NAD 26-25.