69-25-02\tBOEING: Amdt. 39-883. Applies to Model 727 series airplanes. \n\n\tCompliance within the next 2500 hours time in service after the effective date of this AD unless already accomplished. \n\n\tTo prevent generator system lockout, accomplish the following or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region: \n\n\tModify the generator control panels in accordance with Part II, Paragraph A and C of Westinghouse Service Bulletin No. 66-103, dated September 15, 1966, and the supplement dated September 30, 1966, or later FAA approved revisions. \n\n\tThis amendment becomes effective January 3, 1970.