41 C.F.R. § 102-33.40
Acquiring Government aircraft
To acquire Government aircraft, you must follow the requirements in:
(a) 31 U.S.C. 1343;
(b) OMB Circular A-126 Revised;
(c) OMB Circular A-11, Part 2, Section 25.5;
(d) OMB Circular A-76; and
(e) OMB Circular A-94.