 |
| maintenance level: 69 phrases in 19 subjects |
| Astronautics | 16 |
| Aviation | 4 |
| Business | 1 |
| Construction | 1 |
| Economy | 3 |
| Energy industry | 2 |
| General | 1 |
| Logistics | 3 |
| Military | 23 |
| Mining | 3 |
| Oil / petroleum | 2 |
| Oil processing plants | 1 |
| Programming | 1 |
| Quality control and standards | 2 |
| Rail transport | 1 |
| Refrigeration | 1 |
| Reliability | 2 |
| Telecommunications | 1 |
| Transport | 1 |