As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DISENGAGED AUTOPILOT A THE A/C WOULD NOT RESPOND TO CONTROL INPUTS TO TURN LEFT. ACFT COULD TURN RT. ATTEMPTED ANOTHER TURN TO THE LT AT APPROXIMATELY 3 UNITS OF AILERON ROLL THE ROLL STOPPED. ROLLED RIGHT TO THE LEFT SEVERAL TIMES BEFORE WE HAD CONTROL; TO THE LT. GROUNDED - YES. R & R UPPER AILERON PCU IAW AMM 27-11-71 LEAK AND OPS CHECKED GOOD.