The department shall maintain separate accounting and limit its expenditures from the special aviation internal service fund so as to in no instance use any sum for a purpose other than that for which it has been appropriated. Source: SL 1957, ch 1 , § 2; SDC Supp 1960, § 2.0119; SL 2010, ch 227 , § 11; SL 2014, ch 222 , § 9. 50-2-18. Superseded. 50-2-19. Obsolete. 50-2-20, 50-2-21. Repealed by SL 2010, ch 227 , §§ 12, 13. 50-2-22 to 50-2-31. Repealed by SL 2014, ch 222 , §§ 10 to 19.