The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
(first | last) View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)- ASSRs of Russia (5 members)
- AWACS Aircraft (31 members)
- Abruzzo (1 member)
- Abu Dhabi Air Force (1 member)
- Abu Dhabi Emirate (2 members)
- Accidents (2 members)
- Achaea (1 member)
- Aden (3 members)
- Adjar ASSR (1 member)
- Adolf Hitler (1 member)
- Aegean Airlines (1 member)
- Aegean Region (4 members)
- Aer Lingus (1 member)
- Aermacchi (1 member)
- AeroNihon (1 member)
- Aero Vodochody (5 members)
- Aeroflot (9 members)
- Aerolíneas Argentinas (1 member)
- Aeroméxico (1 member)
- Aerospace Companies (164 members)
- Aerospatiale (20 members)
- Aerostar (1 member)
- Afghan Air Force (26 members)
- Afghanistan (13 members)
- Africa (162 members)
- African Union (36 members)
- Agusta (11 members)
- Aichi Prefecture (5 members)
- Air Algérie (1 member)
- Air America (1 member)
- Air Baltic (1 member)
- Air Bosna (1 member)
- Air Burkina (1 member)
- Air China (1 member)
- Air Côte d'Ivoire (1 member)
- Air Djibouti (1 member)
- Air Force of Burkina Faso (5 members)
- Air Forces (243 members)
- Air France (1 member)
- Air Goryeo (1 member)
- Air India (1 member)
- Air Madagascar (1 member)
- Air Mali (1 member)
- Air Malta (1 member)
- Air Namibia (1 member)
- Air New Zealand (1 member)
- Air Senegal International (1 member)
- Air TransCanada (2 members)
- Air Urundi (1 member)
- Air Zaïre (1 member)