Editorial Notes Codification Prior to renumbering of sections 1651 to 1693 of this chapter as sections 3451 to 3493 by Pub. L. 102–83, § 5(a) , Aug. 6, 1991 , 105 Stat. 406 , sections 1677 and 1678 of this chapter were repealed. Section 1677, added Pub. L. 90–77, title III, § 302(b) , Aug. 31, 1967 , 81 Stat. 185 ; Pub. L. 90–631, § 5 , Oct. 23, 1968 , 82 Stat. 1335 ; Pub. L. 91–219, title I, § 102 , title II, § 203, Mar. 26, 1970 , 84 Stat. 76 , 78; Pub. L. 92–540, title I, § 102(1) , title IV, § 401(3), Oct. 24, 1972 , 86 Stat. 1075 , 1090; Pub. L. 93–508, title I, § 102(1) , Dec. 3, 1974 , 88 Stat. 1579 ; Pub. L. 93–602, title II, § 203(a) , Jan. 2, 1975 , 88 Stat. 1958 ; Pub. L. 95–202, title I, § 102(1) , Nov. 23, 1977 , 91 Stat. 1433 ; Pub. L. 96–466, title II , §§ 201(1), 211(1), title VI, § 603(a), Oct. 17, 1980 , 94 Stat. 2187 , 2189, 2209, which set forth provisions respecting eligibility, approval, etc., for flight training, was repealed by Pub. L. 97–35, title XX , §§ 2003(b)(3)(A), 2006, Aug. 13, 1981 , 95 Stat. 782 , 783, effective Oct. 1, 1981 , except as otherwise provided for persons receiving educational assistance. Section 1678, added Pub. L. 90–77, title III, § 306(a) , Aug. 31, 1967 , 81 Stat. 188 , which related to special training for educationally disadvantaged, was repealed by Pub. L. 91–219, title II, § 204(a)(2) , Mar. 26, 1970 , 84 Stat. 79 .