(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 -

(1)

may not require proficiency flying by a member except to the extent required for the member to maintain flying proficiency in anticipation of the member's assignment to combat operations; and

(2)

may not permit proficiency flying in the case of a member who is assigned to a course of instruction of 90 days or more.

(c)

In this section, the term ''proficiency flying'' has the meaning given that term in Department of Defense Directive 1340.4