As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT GUIDANCE COMPUTER FAILED INFLIGHT. CREW DIVERTED TO DTW FOLLOWING FAILURE OF THE FLIGHT GUIDANCE COMPUTER. LANDING WAS UNEVENTFUL. REMOVED AND REPLACED DEGC. ALL CHECKS GOOD IAW RJ-85 MM CH 34 PN ON/OFF 4068300-904. SN ON 98080330 SN OFF 96110262.