我国民用航空第三级管理机构──省（直辖市、自治区）管理局（以下简称省局），原属“政企合一”，集行政管理、飞行运输、机场保障于一体。1987年开始，按着“政企分开”、“机场与航空公司分设”的原则，在原有飞行部队的省局实施了“一分为二”的管理体制改革，把飞行、飞 The third-level administration of civil aviation in our country ─ ─ Provinces (municipalities and autonomous regions) Authority (hereinafter referred to as the provincial bureau), formerly a “combination of government and enterprises,” set of administrative management, flight transport, airport security in one. Since 1987, according to the principle of “separation of government from enterprise” and “separation of airports and airlines”, the “one divides into two” administrative reform has been implemented in the provincial bureau of the former flight force,