What is classified as an Aircraft Station?

An Aircraft Station is specifically defined as a mobile station on board an aircraft. This classification encompasses the communication systems and equipment that are directly used by aircraft while in flight or on the ground as part of an aeronautical operation. These stations are integral for maintaining communication with air traffic control and for ensuring safe aircraft operation, as they allow for the transmission and receipt of critical information and instructions during flights.

In contrast, a mobile station located on the ground does not meet the criteria for an Aircraft Station, as it is not permanently situated or utilized within an aircraft's operational environment. A fixed station for air traffic control is also distinctly different because it refers to ground-based equipment designed to manage air traffic rather than being part of an aircraft. Lastly, a temporary station for emergency landings does not fit the definition either, since it may refer to an ad-hoc setup for specific situations rather than a consistent aircraft communication installation.

Thus, the definition of Aircraft Station strictly applies to equipment and capabilities that are solely used in the context of an aircraft's operational capacity.