As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS INFLIGHT, DURING APPROACH CREW REPORTED SLAT DISAGREE INDICATION. LANDED BOS WITHOUT INCIDENT. FOUND LEFT INBOARD ROTARY ACTUATOR TRIPPED. REPLACED LEFT LEADING EDGE SLAT DRIVE INBOARD ROTARY ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.