As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTING, THE NR 1 AUTO PILOT OR ATS WOULD NOT ENGAGE. NR 2 AUTO PILOT WOULD ENGAGE BUT WOULD NOT TRIM. FLIGHT RETURNED TO AMS AND LANDED WITHOUT INCIDENT. REPLACED AUTO PITCH TRIM COMPUTER AND ACCELEROMETER, OPERATIONAL CHECK NORMAL.