proficiency flying
Defined in 1 dictionary — U.S. Code
United States Code
10 U.S.C. § 2245 — in this section (2 versions over time)
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.