Section 169.1 - Applicability(a) This part prescribes the requirements for issuing a written recommendation and certification that a proposed project is reasonably necessary for use in air commerce or in the interests of national defense. The first two sentences of section 308(a) of the Federal Aviation Act of 1958 (49 U.S.C. 1349(a) ) :(1) Require such a recommendation and certification where Federal funds are to be expended for nonmilitary purposes for airports or air navigation facilities thereon; and(2) provide that any interested person may apply to the Administrator, under regulations prescribed by him, for a recommendation and certification.(b) This part does not apply to projects for the expenditure of Federal funds for military purposes or for airports, or air navigation facilities thereon, operated by the Federal Aviation Administration.Doc. No. 9256, 34 FR 5718, Mar. 27, 1969