§ 2245. Use of aircraft for proficiency flying: limitation
(a)
An aircraft under the jurisdiction of a military department may not be used by a member of the armed forces for the purpose of proficiency flying except in accordance with regulations prescribed by the Secretary of Defense.
(b)
Such regulations—
(c)
In this section, the term “proficiency flying” means flying performed under competent orders by a rated or designated member of the armed forces while serving in a non-aviation assignment or in an assignment in which skills would normally not be maintained in the performance of assigned duties.