As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AT 800 FEET, THE LEFT ENGINE EXPERIENCED A FIRE WARNING INDICATION. CREW RETARDED THE LEFT ENGINE THROTTLE SETTING AND INDICATION CEASED. AIRCRAFT RETURNED TO GCM AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE 13TH STAGE MANIFOLD ON THE LEFT ENGINE. ENGINE OPERATIONAL CHECK OK.