As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5503 - LEFT AND RIGHT AILERON MORE STIFF THAN NORMAL. -A- ON PFD WITH AUTO-PILOT ON, IN TURNS. HYD PUMP 1A SQUEALING. AILERONS FELT NORMAL WHEN DISCONNECTED. FOUND BOTH CENTERING MECHANISMS FORCE TOO HIGH. RIGGED LEFT AND RIGHT AILERON CENTERING MECHANISM SPRING. NO FURTHER DEFECTS. FLIGHT CHECK GOOD.