74-10-02 MCDONNELL DOUGLAS: Amendment 39-1832. Applies to Douglas Model DC-10 series airplanes, certificated in all categories, incorporating Weber Aircraft seats, Part Numbers 818472, 818473, 818474, 818475, 819291, 819812, and 819813, with dash numbers as listed in Weber Aircraft Service Bulletin No. 25-326, dated February 15, 1974. \n\n\tCompliance required within the next 300 hours' time in service after the effective date of this AD, unless already accomplished. \n\n\tTo prevent further inadvertent dislodgement of oxygen generators from seat backs, accomplish the following: \n\n\t(a)\tReplace the oxygen generator torsion retention springs in accordance with Weber Aircraft Service Bulletin No. 25-326, dated February 15, 1974. \n\n\t(b)\tThe Chief, Aircraft Engineering Division, FAA Western Region, may approve equivalent modifications. \n\n\t(c)\tAircraft may be flown to a base for accomplishment of the maintenance required by this AD per FAR's 21.197 and 21.199. \n\n\tThis amendment becomes effective May 6, 1974.