Fixed base operator

A fixed-base operator (FBO) is an organization granted the right by an airport to operate at the airport and provide aeronautical services such as fueling, hangaring, tie-down and parking, aircraft rental, aircraft maintenance, flight instruction, and similar services. In common practice, an FBO is the primary provider of support services to general aviation operators at a public-use airport and is located either on airport leasehold property or, in rare cases, adjacent to airport leasehold property as a "through the fence operation". In many smaller airports serving general aviation in remote or modest communities, the town itself may provide fuel services and operate a basic FBO facility. Most FBOs doing business at airports of high to moderate traffic volume are non-governmental organizations, i.e. either privately or publicly held companies.

Though the term fixed-base operator originated in the United States, the term is becoming more common in the international aviation industry as business and corporate aviation grows. The term has not been officially defined as an international standard, but there have been recent uses of the term in International Civil Aviation Organization (ICAO) publications such as Implementing the Global Aviation Safety Roadmap.

After the end of World War I in November 1918, civil aviation in the United States was primarily unregulated and was primarily made up of "barnstormers" or transient pilots flying inexpensive military surplus aircraft from city-to-city, often landing in farm fields on the outskirts of a town as airports were scarce at that time. These traveling aviators offered airplane rides, aerobatic flight demonstrations, and frequently collaborated as "flying circuses" and performed impromptu airshows for the townsfolk, charging whatever the local economic conditions would allow. As a result, mechanics and early flight instructors moved around with the aircraft and had no established business in any one location.

With passage of the Air Commerce Act of 1926 and its resulting requirements in the licensing of pilots, aircraft maintenance requirements, and regulations in training standards, the transient nature of civil aviation was curtailed. The pilots and mechanics who made their living on the road began establishing permanent businesses, termed fixed-base operations, at the growing number of airports appearing throughout the United States as a way to distinguish permanent businesses from the transient businesses common prior to 1926.

...
Wikipedia