As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, LEFT ENGINE HAD POWER/THRUST LOSS. EICAS MESSAGE "L ENG FLAMEOUT" CAME ON MOMENTARILY. REPLACED LEFT ENGINE FADEC PER AMM 73-21-01. REPLACED FUEL METERING UNIT PER CRJ 700 AMM REF 73-21-03 AND RII 73-400-1000, PN/OFF 66503-8061-926, SN/OFF WYGA8735.