| 1. Precise | ─ Exact; correct; accurate. |
| 2. ILS | ─ Instrument Landing System. |
| 3. ICAO | ─ The International Civil Aviation Organization. |
| 4. Localizer | ─ Part of the ground based ILS equipment. |
| 5. Beam | ─ A ray of light or of electronic radiation. |
| 6. Glide path equipment | ─ Part of the ground based ILS equipment. |
| 7. ILS indicator | ─ The ILS instrument on the pilot's instrument panel. |
| 8. To overshoot | ─ To cease descending (usually on final approach) and begin climbing. ─ The terms to pull-up or go around are also used. |
| 9. Fan marker | ─ Electronic equipment transmitting radio signals in the shape of a fan. |
| 10. Outer marker | ─ One of the fan markers. |
| 11. Threshold | ─ The beginning of that portion of the runway usable for landing. |
| 12. Middle marker | ─ − do − |
| 13. Inner marker | ─ − do − |






