Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Furnishings (hierarchy name)
5. furnishings (works)
6. [furnishings by form or function]
7. lighting devices
8. [lighting devices by function]
9. beacons

Narrower term/s

• airport beacons
• airway beacons
• landmark beacons
• obstruction beacons

Anotations

Scope note:

Visual aids to navigation displaying flashes of white or colored light or both, used to indicate the location of airports, landmarks, and certain points of the federal airways in mountainous terrain and to mark hazards.