1. Home
  2. top of the aat hierarchies
  3. Objects Facet
  4. Furnishings and Equipment (hierarchy name)
  5. Transportation Vehicles (hierarchy name)
  6. vehicles (transportation)
  7. air and space transportation vehicles
  8. aircraft
  9. [aircraft by form]
  10. heavier than air aircraft
  11. rotary-wing aircraft
  12. helicopters
Scope note
Refers to various heavier than air aircraft characterized by large-diameter, powered, horizontally rotating wings or blades that can lift the craft vertically and sustain their position in the air.
Accepted term: 22-Jul-2024