As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO PILOT A WILL NOT ENGAGE. AUTO PILOT B WILL ENGAGE FOR 8 SECONDS THEN DISENGAGE. NO OTHER LIGHTS/MESSAGES OR WARNINGS. GROUNDED - YES. REF FIM 22-11/856 FOUND FAULT AIL ACT PRESS LCL INV INV ON LAST LEG MAINT. MESSAGE 22-11147. PREFORMED DFCS BITE IINTERACTIVE TESTS THROUGH MCP COMD/CWS INTERLOCK. ALL TESTS PASS NO CURRENT FAULTS.