65-01-02\tBOEING: Amdt. 39-16 Part 39 Federal Register December 24, 1964. Applies to Models 707 and 720 Series Aircraft. \n\n\tCompliance required as indicated. \n\n\tFlight tests have disclosed that speed brake actuation during fuel jettisoning causes fuel to impinge on the horizontal stabilizer. To correct this condition, accomplish the following: \n\n\t(a)\tWithin 500 hours' time in service after the effective date of this AD, unless already accomplished: \n\n\t\t(1)\tInstall a placard on the fuel dump chute panel in the cockpit that reads, "Do not dump fuel with the speed brakes extended." \n\n\t\t(2)\tAmend the limitations section of the FAA approved Airplane Flight Manual by adding the following two statements under fuel dumping limitations: \n\n\t\t\t(i)\t"Do not dump fuel with speed brakes extended." \n\n\t\t\t(ii)\t"NOTE: Do not use full and rapid aileron control while dumping fuel." \n\n\t(b)\tEquivalent wording, subject to prior approval by the Chief, Aircraft Engineering Division, FAA Western Region, may be used in lieu of that specified in this AD. \n\n\tThis directive effective January 23, 1965.