As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND C/B AFCS SYS B ENGAGE INTLK OPEN. GROUNDED - YES. RESET AFCS SYS B ENGAGE INTLK C/B PER AMM 20-60-01 C/B RESET PROCEDURE. ACCOMP'D DFCS OPS TEST PER AMM 22-11-00, ALL TESTS INCLUDING SYS B ENGAGE INTLK OPS NRML - NO FAULTS AND C/B REMAINS RESET. ETOPS SIGNIF SYSTEM - GND VERIFICATION SUCCESSFUL.