As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6281 - IAD-HPN - DURING CLIMB-OUT, RETURNED TO IAD DUE TO LEFT ADI IN LEVEL FLIGHT SHOWS 18 DEGREE PITCH UP AND 20 DEGREE LEFT TURN. AIRCRAFT LANDED WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED LEFT ADI. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)