10 U.S.C. § 2003
Aeronautical rating as pilot: qualifications
To be eligible to receive an aeronautical rating as a pilot in the Army or Air Force or be designated as a naval aviator, a member of an armed force must successfully complete an undergraduate pilot course of instruction prescribed or approved by the Secretary of his military department.
(Added Pub. L. 92–168, § 4(1) , Nov. 24, 1971 , 85 Stat. 489 .)