64-26-01\tBOEING: Amdt 830 Part 39 (New) Federal Register November 18, 1964. Applies to Model 727 Series Aircraft. \n\n\tCompliance required as indicated. \n\n\t(a)\tBefore further flight after the effective date of this AD, open the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18. \n\n\t(b)\tAt the first scheduled stop where facilities and personnel are available secure these circuit breakers in the off position. \n\n\t(c)\tAutopilot may be reactivated when modified in accordance with Boeing Service Bulletin 22-7 dated October 27, 1964, or an FAA Western Region Aircraft Engineering Division approved equivalent. \n\n\tThis directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated October 23, 1964.