As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL FLT 754 - EN ROUTE PHL - CDG. DURING FLIGHT, RECEIVED ECAM MESSAGE "AUTO FLT A/THR OFF", AND " ENG 1 EPR MODE FAULT". THE FLIGHT RETURNED TO FIELD PHL AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NUMBER ONE ENGINE RELAY UNIT. OPERATIONALLY CHECKS OK.