What happened
While operating on a repositioning flight, the flight crew encountered a restriction in aileron control during maneuvers for landing. As the aircraft approached the runway, the crew experienced limited aileron control deflection to the left and a complete loss of aileron control to the right.
Despite these control difficulties, the airplane landed successfully with no injuries reported.
The investigation
Following the incident, an examination of the aircraft's aileron cable revealed that the component was broken. An independent metallurgical analysis of the broken cable determined that the failure was caused by the cable coming off its pulley and subsequently wearing against a small diameter steel pin.