What was found
MCI - DIVERSION - FLT 621 - DEPARTING FROM MKE EN ROUTE TO PHX, CREW REPORTED DUAL AUTOPILOT FAILURE, WOULD NOT ENGAGE. AIRCRAFT DIVERTED TO MCI TO REFUEL DUE TO INABILITY TO COMPLY WITH RVSM RESTRICTIONS. LANDED WITHOUT FURTHER EVENT IN MCI AND CREW DEFFERED BOTH AUTOPILOTS. IN PHX, MAINTENANCE FOUND THAT THE AILERON FORCE LIMITER WAS POPPING BOTH "A" AND "B" INTERLOCK CIRCUIT BREAKERS. REMOVED AND REPLACED THE AILERON FORCE LIMITER, OPERATIONAL CHECKS WERE GOOD. VENDOR CONFIRMED FAILURE. FAILED PRELIMINARY FUNCTIONAL TEST INTERMITTENT LOGIC SWITCH @17DEGREES. FOUND 2 WORN ACTUATORS, 2 SWITCHES WERE CONTAMINATED AND 2 SWITCHES OUT OF TOLERANCE. REPLACED PARTS, REPAIRED AND TESTED UNIT PER CMM 22-10-02 REV