Uncontrolled Aerodromes: The Foundation

Before we discuss the three types of service at uncontrolled aerodromes, let us clarify the distinction immediately.

Controlled Aerodrome (with ATC): A ground station holds a controlling function. ATC can issue clearances. You cannot be cleared for takeoff, land, or taxi without explicit permission. You are under control.

AFIS Aerodrome (Aerodrome Flight Information Service): A ground station provides information only. It is not ATC. There are no clearances. You make a request, the station provides information (wind, runway, other traffic), and you decide. Information is advisory; you remain responsible.

Unattended Aerodrome: No ground station at all. You broadcast blind to any other aircraft in the vicinity. Nobody is obliged to answer. You navigate entirely by self-announce procedures.

This lection covers all three, with emphasis on how radio operations differ from controlled fields.

[Important distinction: AFIS (Aerodrome Flight Information Service) operates at specific aerodromes and provides aerodrome-specific information. FIS (Flight Information Service) is a broader en-route information service available in certain airspace and provides information for aircraft in transit. Both are advisory services, not ATC control, but they operate in different contexts.]