As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNSUCCESSFUL A3 PRACTICE APPROACH UPON PRESSING 2ND AP GOT NO AIII. TRIED TO MANUALLY ENGAGE, BUT STILL DID NOT WORK AND HAD TO MANUALLY LAND. GROUNDED-YES. DFCS FAULT REVIEW LAST LEG FAULTED 22-11085 CHANNEL "A". LRU REPLACEMENT TEST FOR VOR PASSES. ACCOMPLISHED LAND VERIFY TEST. TEST PASSES, REF B737-800 FIM 22-11 TASK 899. HGS RECORDED NO HC OR FC FAULTS. ACCOMPLISHED HGS SYSTEM TEST. ALL TESTS PASS, REF FIM 34-36 TASK 899.