As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH AUTOPILOTS FAILED DURING CRUISE, RETURNED TO SBKP. PERFORMED FCC NR 1 AND FCC NR 2 RTS OF THE AUTO FLIGHT SYSTEM. ALL TESTS PASSED IAW MM 22-01-10 AND FCC NR 1 AND NR 2 CAT 111B RTS ALL TEST PASSED IAW MM 22-00-00. AIRCRAFT RETURNED TO SERVICE.