As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STEER FAIL ON TAKEOFF ROLL. ONCE GEAR EXTENDED ON ARRIVAL, EICAS AMBER STEER FAIL MESSAGE CAME BACK. CB RESET WORKED FOR ABOUT 30 SECONDS. CB METHOD ATTEMPTED 3 TIMES. STEER FAIL MESSAGE CONT TO COME ON. EMERGENCY DECLARED. "TRANSFERRED TO NRWC 040-DFW-04570" RAR STEERING CONTROL MODULE IAW AMM 32-53-01. OPERATIONAL CHECK GOOD