As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INVESTIGATED PILOT COMPLAINT OF AILERON CONTROLS BINDING. NOTED BINDING/BANGING TYPE SOUNDS UNDER CENTER CABIN FLOOR. FOUND NOISES AND BINDING NOT PRESENT WITH AILERON SERVO REMOVED FROM CAPSTAN, RETURNED WHEN AILERON SERVO REINSTALLED. ALSO NOTED NOISES/BINDING NOT NOTICEABLE WITH SERVO LOOSELY FIT, NOISES/BINDING RETURNED WHEN SERVO SECURED TO CAPSTAN. REPLACED SERVO WITH OVERHAULED EXCHANGE UNIT, OPERATIONAL CHECKS SATISFACTORY.