What type of companies are referred to as Fixed Base Operators (FBO)?

Fixed Base Operators (FBOs) are specifically defined as companies that provide a range of services to general aviation at airports. These services often include fueling, hangaring, tie-down and parking, passenger services, and sometimes maintenance and repair. FBOs play a critical role in supporting private and charter aircraft operations, catering to the needs of general aviation pilots and passengers who may not be using commercial airline services.

The distinction arises from the fact that the other options do not pertain to the core services typically associated with FBOs. Airlines offering commercial services predominantly serve scheduled flights and passengers rather than general aviation. Government agencies regulating aviation focus on oversight and regulatory compliance, while technological firms maintaining airport systems are involved in the infrastructure and technology side, rather than providing direct services to aircraft or pilots at a personal level. Therefore, FBOs are essential entities for general aviation operations, distinguishing them from other aviation-related companies and organizations.