As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT WILL NOT TRACK VOR AND GPS IN BOTH A AND B MODES. T/S AUTOPILOT SYST. FOUND ROLL CHANNEL FAILED. R&R ROLL CHANNEL. PERFORMED A/P SYSTEM ADJ TEST IAW MM 22-11-01. TESTED NORMAL IN A&B MODES VOR, NAV, LOC, AND HDG SELECT MODES.