The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Air acident (2 members)
- Airbus (1 member)
- Aircraft instruments (1 member)
- Airline (3 members)
- Airports (4 members)
- Article stubs (7 members)
- Aviation risks (1 member)
- Avionics (1 member)
- Bkb,, (1 member)
- BlogListingPage (0 members)
- Blog posts (1 member)
- Boeing 737 (1 member)
- Boeing 747 (1 member)
- Boeing aircraft (3 members)
- Browse (1 member)
- Hidden categories (2 members)
- High-wing aircraft (1 member)
- Image copyright tags (2 members)
- Image wiki templates (1 member)
- Light aircraft (1 member)
- Low-wing aircraft (3 members)
- Pages with broken file links (2 members)
- Piper aircraft (2 members)
- Propeler plane (1 member)
- Quadjets (1 member)
- Single-engined tractor aircraft (1 member)
- Twinjets (1 member)
- User-created public domain images (3 members)
- Warning systems (1 member)