As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT B AND CWS B INOPERATIVE. ACFT GROUNDED. LAST LEG FCC B FAULTS, FO AUTOPILOT DISC SWITCH FCCB J1B K07. IAW WDM 22-11-12, PG 3, SH 2, GOOD 28 VOLTS AT TB806 X A14 - 0 VOLTS AT XA13. REMOVED & REPLACED THE CAPTAIN'S AUTOPILOT DISCONNECT SWITCH S231 IAW AMM 22-11-41. OPS NORMAL.