As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1211 BOS-BUF HAD A "SLAT FAIL" EICAS MESSAGE ON FINAL APPROACH TO BUF LANDED WITH SLATS 0 AND FLAPS 2. MX TROUBLESHOOTING FOUND FAULT CODE 27811021ACE PERFORMED FIM TASK 27-81-00-810-802-A. FOUND NO SLAT ACTUATOR TORQUE LIMITERS TRIPPED, FAULT CLEARED AND SLATS OPS CHECKS GOOD. PERFORMED RETURN TO SERVICE CHECK, NO FAULTS NOTED. AIRCRAFT RETURNED TO SERVICE.