As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGAGED AUTOPILOT A GOT A STAB OUT OF TRIM LIGHT DISENGAGED THE AUTOPILOT. ENGAGED AUTOPILOT B GOT A STAB OUT OF TRIM INDICATION. BOTH TIMES THE STABILIZER WAS NOT TRIMMING WITH AUTOPILOT ENGAGED. / R+R STAB TRIM MOTOR&RELAY R850 FOR TROUBLE SHOOTING DISCREPANCY REMAINS OPEN ON LP # 1458102 REF AMM 27-41-71 REF SWPM 20*80 RAR # 93180 P/N OFF 6355C0001-01 P/N ON 6355C0001-02 S/N OFF 4009 S/N ON 07058