As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF RECEIVED A FLAP FAIL EICAS MESSAGE. AFTER PILOT RAN QRH, PILOT DETERMINED THE FLAPS WERE STUCK IN THE FLAPS 1 POSITION. DECLARED AN EMERGENCY AND RETURNED TO FIELD. LANDED WITHOUT INCIDENT. FOUND FLAP ACTUATOR TORQUE LIMITER TRIPPED, REMOVED AND REPLACED ACTUATOR.