Pristina military ATC service was being provided in accordance with established procedures in Kosovo at the time of the accident.

Controlled airspace is airspace of defined dimensions within which ATC services are provided.

Terminal controllers are responsible for providing all ATC services within their airspace.

These distances vary depending on the equipment and procedures used in providing ATC services.

Because there are no radar systems available for oceanic control, oceanic controllers provide ATC services using procedural control.

ATC services include tower, approach and centre (en route) services.

UAT is also the first link to be certified for "radar-like" ATC services in the United States.

General aviation is only a marginal user of ATC services.

And general aviation is often forced to use ATC services that it doesn't want or need.

That is reason why approach is the most difficult job in compare to another ATC service.