| 1. To co-ordinate: | ─ To pass all information from one controller to another. |
| 2. VHF: | ─ Very High Frequency. |
| 3. UHF: | ─ Ultra High Frequency. |
| 4. Visual Meteorological Conditions: | ─ Known as VMC. Clear weather conditions equal to or better than, specified minima which permit a flight to be conducted in accordance with Visual Flight Rules (VFR). |
| 5. Instrument Meteorological Conditions: | ─ Known as IMC. Poor weather conditions, less than the minima specified for VMC. |
| 6. To stack: | ─ To place one on top of the other. |
| 7. Expected Approach Time (EAT): | ─ The time at which АТС expects that an arriving aircraft following a delay, will leave the holding point to complete its approach for landing. |
| 8. Supersonic aircraft: | ─ Aircraft flying over Mach 1 (faster than the speed of sound). |






