As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB - EMERGENCY DECLARED -LT ENGINE FIRE INDICATION ON EICAS AND FUEL CONTROL SWITCH. ACTICATED ON CLIMB AND THEN EXTINGUISHED AFTER ABOUT 45 SECONDS RESULTING IN AN AIR TURN BACK - FLT LANDED W/OUT INCIDENT.FOUND HPT RECOUP AIR TEE BLOWN, AT 10:30 POSITION. REPLACED, TORQUED AND SAFETYED SAID TEE DUCT REF LEFT ENG. REF CF6 ENGINE MANUAL 72-00-00 ENGINE PIPING ASSY RAN ENG ALL INDICATIONS AND LEAK CK NORMAL SECURED.