SUBJECT: Elevator control stick hinge bolt inspection.
Rainbow Aircraft has recently conducted a 500 Hour inspection on a Cheetah XLS. During the process of replacing an Elevator cable, it was found that the Elevator / Aileron control stick in the flight deck had a small amount of play. On further investigation it was found that the M6 40mm 8.8 high tensile steel bolt used as the pivoting point for elevator control, has worn away to allow play to form. The bolt has been inspected to determine the severity of the defect. The bolt has been found to have eroded away due to friction. This friction is induced by the cable tension from the elevator cables.