As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEVERAL COCKPIT NAVIGATION INSTRUMENTS FAILED AFTER TAKEOFF FROM DTW. FLIGHT DIVERTED TO MEM AND LANDED WITHOUT INCIDENT. PERFORMED TEST OF INDIVIDUAL COMPONENTS AND ALL SYSTEMS CHECKED NORMAL. PROBLEM COULD NOT BE DUPLICATED AND AIRCRAFT RETURNED TO SERVICE.