instrument landing system en · NOUN
Meanings
- A collection of radio navigation aids (always including a localizer and glideslope, and often one to three marker beacons as well) used by pilots for approach guidance to a specific airport runway, especially when visibility is limited.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| instrument landing systems | Number=Plur | lexicographic | |
| ILS | Abbr=Yes | lexicographic |
Coordinates
approach lighting system · precision approach landing indicator · VHF omnidirectional range