As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE AT FL 37.0 AUTOPILOT DISENGAGED IN A TURN RE-ENGAGED WITH NO FURTHER ACTION. ACFT GROUNDED. FLT FAULT REVIEW SHOWS "MCP DATA INVALID ", B CHANNEL HAS HISTORY BOTH A & B CHANNELS. REPLACED MCP, REF MM 22-11-34. PERFORMED BITE GPS NR 32, 49 LAND VERIFY & FCC/AT HGS SENSOR TEST. ALL TESTS NORMAL. ACFT REMAINS CATIIIA AUTOLAND & HGS STATUS PLACARD REFLECTS SAME.