| 841111 | 841111 - Turbo-jets; of a thrust not exceeding 25kN |
| 841112 | 841112 - Turbo-jets; of a thrust exceeding 25kN |
| 841121 | 841121 - Turbo-propellers; of a power not exceeding 1100kW |
| 841122 | 841122 - Turbo-propellers; of a power exceeding 1100kW |
| 841181 | 841181 - Turbines; gas-turbines (excluding turbo-jets and turbo-propel |
| 841182 | 841182 - Turbines; gas-turbines (excluding turbo-jets and turbo-propel |
| 841191 | 841191 - Turbines; parts of turbo-jets and turbo-propellers |
| 841199 | 841199 - Turbines; parts of gas turbines (excluding turbo-jets and tur |