As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT THE FIRST OFFICER'S AHAR INDICATES +3 DEGREES NOSE UP ON THE ADI. TRANSFERRED BOTH DISPLAYS TO AHAR NR 1 AND RETURNED TO DFW. REMOVED NR 2 AHRS COMPUTER AND REPLACED WITH A SERVICEABLE ONE IAW CL600 MM 34-21-01. OPS CHECKS GOOD.