As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF, ENROUTE, ALL THE CAPTAINS AIR AND FLIGHT INSTRUMENTS FAILED. FLIGHT RETURNED TO FIELD AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE CAPTAINS AIR DATA COMPUTER. PERFORMED SATISFACTORY FUNCTIONAL CHECK IAW MM AND LAND VERIFY TEST IAW R5 JOB CARD.