As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCI - FLT 301 - AUTO PRESSURIZATION FAILED ON CLIMB-OUT, STANDBY PRESSURIZATION COULD NOT MAINTAIN PRESSURIZATION SCHEDULE. AIRCRAFT RETURNED TO MCI WITH NO INCIDENT. REMOVED AND REPLACED NR 2 AIR DATA COMPUTER IAW MM 21-30-0, OPERATIONAL CHECK NORMAL. (M)