| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 926120 | 926120 | 926120 | Aircraft inspection, government | |||
| 926120 | 926120 | 926120 | Coast Guard (except academy) | |||
| 926120 | 926120 | 926120 | Federal Aviation Administration (except air traffic control) | |||
| 926120 | 926120 | 926120 | Licensing of transportation equipment, facilities, and services | |||
| 926120 | 926120 | 926120 | Merchant Marine (except academy) | |||
| 926120 | 926120 | 926120 | Motor carrier licensing and inspection offices | |||
| 926120 | 926120 | 926120 | Motor vehicle licensing offices, government | |||
| 926120 | 926120 | 926120 | National Transportation Safety Board | |||
| 926120 | 926120 | 926120 | Port authorities and districts, nonoperating | |||
| 926120 | 926120 | 926120 | Public transportation commissions, nonoperating | |||
| 926120 | 926120 | 926120 | Railroad and warehouse commissions, nonoperating | |||
| 926120 | 926120 | 926120 | Transit systems and authorities, nonoperating | |||
| 926120 | 926120 | 926120 | Transportation departments, nonoperating | |||
| 926120 | 926120 | 926120 | Transportation regulatory agencies | |||
| 926120 | 926120 | 926120 | Transportation safety programs, government |