As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6186 - LYH-IAD - DURING CLIMB, AN UNSCHEDULED LANDING AT LYH DUE TO LEFT ADI/AHRS FAILED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE RERACKED LEFT ADI CONTROL HEAD, OPS CHECK GOOD. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)