Legislative Act No. 3909 passed by the Congress of the Philippines on November 20, 1931 created an Office under the Department of Commerce and Communications to handle aviation matters, particularly the enforcement of rules and regulations governing commercial aviation as well as private flying.
菲律宾国会 于1931年11月20日通过的第3909号法令，在商务和通讯部下设立了一个办公室，负责处理航空事宜，特别是执行商业与私人航空的规章制度。