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. fixed-wing aircraft
  12. [fixed-wing aircraft by number of wings]
  13. biplanes
Scope note
Airplanes with two sets of wings, one above and usually slightly forward of the other.
Accepted term: 15-Jul-2024