As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ND AUTOPILOT WOULD NOT ENGAGE ON AUTOLAND APPROACH SINGLE CHANNEL, REMAINED ILLUMINATED WITH BOTH AUTOPILOT SWITCHES ILLUMINATED. HGS OK. ACFT GROUNDED. FLT FAULT REVIEW SHOWS NO FAULTS ON A OR B AUTOPILOT. REF FIM 22-11, TASK 801. PERFORMED LAND VERIFY TEST REF MM 22-11-00/201, BITE GROUP 49, ALL TESTS PASSED.