To add to subcategories use:

((aero-stub)) for aircraft stubs
((aero-company-stub)) for aeronautical company stubs
((aerospace-museum-stub)) for aerospace museum stubs
((air-sports-stub)) for air sports stubs
((airline-stub)) for airline stubs
((airport-stub)) for airport stubs
((aviation-accident-stub)) for stubs relating to aviation accidents and incidents
((aviation-bio-stub)) for aviation biography stubs
((component-aircraft-stub)) for aircraft component stubs
((engine-aircraft-stub)) for aircraft engine stubs
((kite-stub)) for kite stubs
((mil-aviation-stub)) for military aviation stubs
((missile-stub)) for guided missile stubs
((rocket-stub)) for rocket stubs