As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF NR 1 ENG FIRE WARNING LIGHT ILLUMINATED. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURE, SHUTDOWN ENGINE AND FIRED BOTTLE. NR 1 ENGINE B-LOOP ON MEL. FLIGHT RETURNED TO MEM FOR AN UNEVENTFUL LANDING. MAINTENANCE REPAIRED LOOSE AND FRAYED WIRING. REPLACED UPPER LT WIRE HARNESS. REPLACED NR 1 FIRE BOTTLE. SYSTEM CHECKS GOOD.