As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) EN ROUTE CREW REPORTED AILERONS WERE STIFF, BEYOND 5 DEGREES INPUT WITH AUTOPILOT SELECTED OFF. AUTOPILOT ON AILERONS WERE BETTER. AIRCRAFT TAKEN OUT OF SERVICE FOR TOURBLESHOOTING. AILERON POWER CONTROL UNIT RIGGING CARRIED OUT AS PER WORK CARD 51143, ITEM 7. AILERON CABLES CHECKED LT AND RT SIDE AND LT AILERON LUBED. NO FAULTS FOUND.