A technician notes what appears to be “...cock-eyed” bolt heads on the aileron balance weights during a phase 2 inspection (P/N 6524004-12). Further investigation revealed the weight stack had developed significant corrosion, which enlarged the retaining bolt holes. This also allowed the stack to be loose. New parts were installed to fix the discrepancy. “Detailed inspection of this area is not on any inspection form. I suggest operators of this model aircraft remove the ailerons and (perform) a complete and detailed inspection of these weights.”

(The submitter cropped the specific page reference. Other included references may indicate this page as being from the Cessna Illustrated Parts Catalog: 57-60-00; figure 1.)

Part Total Time: 6,281.0 hours.