As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER T/O WITH ALL PARAMETERS NORMAL ON BOTH ENGINES THE LEFT ENGINE FIRE WARNING ANNUNCIATED. THE CREW PULLED BACK THE THROTTLE AND THE FIRE WARNING EXTINGUISHED. THE CREW ELECTED TO SHUT DOWN THE ENGINE. NO FIRE BOTTLES WERE BLOWN. A/C DID A ATB TO ATL. THE A/C ARRIVED WITH NO EVIDENCE OF FIRE DAMAGE. ENGINE REPLACED.