* Airport service
This page shows decentralized state units and decentralized subordinate units.
Decentralized units
| Year | Count | Name | Decentralized |
|---|---|---|---|
| 1948 | 4 | aviation district offices | subordinate units |
| 1949 | 4 | aviation district offices | subordinate units |
| 1950 | 4 | aviation district offices | subordinate units |
| 1951 | 4 | aviation district offices | subordinate units |
| 1952 | 4 | aviation district offices | subordinate units |
| 1953 | 4 | aviation district offices | subordinate units |
| 1954 | 4 | aviation district offices | subordinate units |
| 1955 | 4 | aviation district offices | subordinate units |
| 1956 | 4 | aviation district offices | subordinate units |
| 1957 | 4 | aviation district offices | subordinate units |
| 1958 | 4 | region offices | subordinate units |
| 1959 | 4 | region offices | subordinate units |
| 1960 | 4 | region offices | subordinate units |
| 1961 | 4 | region offices | subordinate units |
| 1962 | 4 | region offices | subordinate units |
| 1963 | 4 | region offices | subordinate units |
| 1964 | 4 | region offices | subordinate units |
| 1965 | 4 | region offices | subordinate units |
| 1966 | 4 | region offices | subordinate units |
| 1967 | 4 | region offices | subordinate units |
| 1968 | 4 | region offices | subordinate units |
| 1969 | 4 | region offices | subordinate units |
| 1970 | 4 | region offices | subordinate units |
| 1971 | 4 | region offices | subordinate units |
| 1972 | 4 | region offices | subordinate units |
| 1973 | 4 | region offices | subordinate units |
| 1974 | 4 | region offices | subordinate units |
| 1975 | 4 | region offices | subordinate units |
| 1976 | 4 | region offices | subordinate units |
| 1977 | 4 | region offices | subordinate units |
| 1978 | 4 | region offices | subordinate units |
| 1979 | 4 | region offices | subordinate units |
| 1980 | 4 | region offices | subordinate units |
| 1981 | 4 | region offices | subordinate units |
| 1982 | 4 | region offices | subordinate units |
| 1983 | 4 | region offices | subordinate units |
| 1984 | 4 | region offices | subordinate units |
| 1985 | 4 | region offices | subordinate units |
| 1986 | 4 | region offices | subordinate units |
| 1987 | 4 | region offices | subordinate units |
| 1988 | 4 | region offices | subordinate units |
| 1989 | 4 | region offices | subordinate units |
| 1990 | 4 | region offices | subordinate units |
| 1991 | 4 | region offices | subordinate units |
| 1992 | 4 | region offices | subordinate units |