[1][2] There are hundreds of aircraft type clubs around the world providing services to most certified, amateur-built, warbird and ultralight aircraft types that have been produced in any significant numbers.
While the majority are organized as not-for-profit associations, some type clubs are run as for-profit businesses.
[1] Type clubs vary in the services they offer and how they work.
Some clubs are run by one volunteer enthusiast, using a free web service to provide a website or forum.
Some of the largest types clubs have full-time professional staff and offer a full range of services.