As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AILERON MOVEMENT ON EICAS DOESN'T MATCH MOVEMENTS FROM CONTROL WHEEL. TURNING WHEEL TO LEFT GETS STIFF FROM 3 TO 6 DEG. ON INSPECTION FOUND NUT -LOOSE HARDWARE- IN RT LATERAL CONTROL OVERRIDE QUADRANT. PART REMOVED. NO DAMAGE NOTED TO CABLE OR QUADRANT. ADJUSTED TRIM ACTUATOR, LT AILERON O/B PCU HYDRAULIC PRESSURE LINE BROKEN NEAR PCU ATTACH. INSTALLED AILERON POWER CONTROL TUBE ASSY LINE.