What was found
WHEN CLIMBING THROUGHT FL 310, WITH AUTOPILOT ON, "AILERON RATIO LOW" CAS MESSAGE APPEARED. AUTOPILOT INPUT A CONTINUAL LT AND RT INPUT, SOMEWHAT AGGRESSIBLY, HYD SYS NORMAL. WITH AUTOPILOT OFF, CONTROLS NORMAL. ON DESCENT THROUGH FL310 CAS MESSAGE DISAPPEARED AND AUTOPILOT RESUME NORMAL INPUT. C/W EICAS AILERON RATIO LOW MSG CHECK , OPS CHECK GOOD IAW MM 27-10-01. CHECKED AILERON POSITION INDICATION ADJUSTMENT FOR AUTOPILOT INPUT, CHECKS GOOD IAW MM 31-44-00. OK TO CLOSE AILERON WING SECTOR PNLS. REMOVED AND REPLACED NR 1 IAC IAW MM 34-25-01. UPLOADED CHECKLIST AND CURRENT NAV DATABASE, AND CROSS LOADED CUSTOM DATABASE. SYS OPS CHECK SATISFACTORY. CLOSED AILERON SECTOR PANEL.