60-02-02\tBOEING: Amdt. 75 Part 507 Federal Register January 15, 1960. Applies to the following 707-100 Series Aircraft Only: Serial Numbers 17586 through 17591, 17609, 17610, 17628 through 17641, 17659 through 17666, 17925, 17926. \n\tCompliance required as indicated. \n\tService experience has shown that it is possible for the inboard aileron balance panel end seals to loosen and restrict movement of the aileron on some Boeing 707 aircraft. Therefore, certain inspection(s) or modification(s) are to be accomplished. \n\tPart I. Within the next 200 hours' time in service and at each 200 hours' time in service thereafter until Part II of this AD is accomplished, conduct the following inspection(s). \n\t(a)\tRemove the inboard aileron balance bay access panels on the wing lower surfaces. \n\t(b)\tInspect the fasteners retaining the felt end seals P/N 5-87140-8 and P/N 3-94377-1 at each end of the balance panel hinge and retorque as necessary. \n\t(c)\tReinstall access panels. \n\tPart II. ThePart I inspections may be discontinued after incorporating the following modification(s). \n\t(a)\tRemove the inboard aileron balance bay access panels on the wing lower surfaces. \n\t(b)\tDelete felt end seals 5-87140-8 and washer BAC-W10P-69S (8 places) and retaining screw NAS 514P-632-8, washer AN 960-6 and nut (16 places). Open holes are satisfactory. \n\t(c)\tDelete felt end seals 3-94377-1 (8 places). \n\t(d)\tInspect and replace any damaged nuts and nut plates from which bolts were removed. \n\t(e)\tDelete spacer washer AN 960D10 (8 places). \n\t(f)\tReassemble using shorter bolts to compensate for parts deleted or modified. \n\t(g)\tCheck for proper operation of inboard ailerons. \n\t(h)\tReinstall access panels. \n\t(Boeing Service Bulletin No. 245 pertains to this same subject.)