| 49020 | Aircraft and space vehicles in general |
| 49025 | Materials for aerospace construction |
| 49030 | Fasteners for aerospace construction |
| 49035 | Components for aerospace construction |
| 49040 | Coatings and related processes used in aerospace industry |
| 49045 | Structure and structure elements |
| 49050 | Aerospace engines and propulsion systems |
| 49060 | Aerospace electric equipment and systems |
| 49080 | Aerospace fluid systems and components |
| 49090 | On-board equipment and instruments |
| 49095 | Passanger and cabin equipment |
| 49100 | Ground service and maintenance equipment |
| 49120 | Cargo equipment |
| 49140 | Space systems and operations |
| 4995 | |
