FBOs, or Fixed Base Operators, are service providers located at airports that cater primarily to general aviation. They offer a range of services, including fueling, hangaring, maintenance, and flight planning assistance for private and charter aircraft. FBOs play a crucial role in ensuring that pilots and passengers have a smooth experience when using smaller airports. In addition to operational services, FBOs often provide amenities such as lounges, conference rooms, and transportation options. They serve as a hub for private aviation, facilitating the needs of both aircraft owners and travelers. FBOs can vary in size and services, with some being part of larger chains while others are independent operators.