Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Transportation Vehicles (hierarchy name)
5. vehicles (transportation)
6. air and space transportation vehicles
7. aircraft
8. [aircraft by method of propulsion]

Anotations

Scope note:

Vehicles that are supported and propelled by a cushion of air ejected downwards against a surface close below it, and that may travel over any relatively smooth surface such as a body of water or flat land without direct contact.