As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6532 - IAD-ORF - DURING CLIMB, AIRCRAFT RETURNED TO IAD DUE TO LEFT AIR DATA COMPUTER FAILED ON ROTATION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED AIR DATA COMPUTER, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)