As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ROTATION, CREW REPORTED A LOUD BANG, FOLLOWED BY ERRATIC LEFT ENGINE INDICATIONS AND THEN A LEFT ENGINE FIRE INDICATION. ONE FIRE BOTTLE WAS DISCHARGED AND MESSAGE CLEARED. SHUT DOWN THE LEFT ENGINE, DECLARED AN EMERGENCY AND RETURNED TO FIELD. CREW ALSO REPORTED NO EVIDENCE OF SMOKE IN CABIN. AND NO ABNORMAL ODORS IN CABIN. REMOVED AND REPLACED THE LT ENG IAW AMM. OPS CHECKED GOOD