As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT B WILL NOT ENGAGE IN CMD OR CWS. AUTOPILOT A ENGAGES IN BOTH CMD AND CWS FOR 3-5 SECONDS BEFORE DISENGAGING WITH HORN & LIGHT WORKING. NO OTHER LIGHTS ILLUMINATED. ACFT GROUNDED. DFCS BITE, MAINTENANCE MESSAGE 22-1150, FIM 22-13 TASK 805, B AILERON PRESSURE SWITCH FAILED. REPLACED B SYSTEM A/P AILERON PRESSURE SWITCH, LEAK CHECKED GOOD IAW AMM 22-11-40. OPS CHECKED SWITCH IAW AMM 22-11-40, OPS NORMAL.