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Controlled Airspace

Controlled Airspace is an airspace of defined dimensions within which air traffic control service is provided in accordance with the airspace classification.

Services

There are 3 services available in controlled airspace:

• Flight Information Service
• Alerting Service
• Radar Control Service

Flight Information Service:

A Flight Information Service (FIS) is a non-radar service provided, either separately or in conjunction with other services, for the purposes of supplying information useful for the safe and efficient conduct of flights. Under a FIS the following conditions apply:

• Provision of the service includes information about weather, changes of serviceability of facilities, conditions at aerodromes and any other information pertinent to safety.
• The controller may attempt to identify the flight for monitoring and co-ordinationpurposes only. Such identification does not imply that a radar service is being provided or that the controller will continuously monitor the flight.
• Pilots must be left in no doubt that they are not receiving a radar service.
• Controllers are not responsible for separating or sequencing aircraft.
  

Alerting Service:

An alerting service is provided to notify appropriate organisations regarding aircraft in need of search and rescue aid, and assist such organisations as required.

Radar Control Service:

a) radar control service may be provided to aircraft operating IFR, SVFR or VFR. When providing the service controllers issue instructions to which:
a) pilots of aircraft operating IFR are required to comply; and
b) pilots of aircraft operating SVFR or VFR will comply unless they advise the controller otherwise.

Semi-Circular Rule

Aircraft shall comply with the semi-circular rule, which means that the cruising level shall be selected according to the magnetic track. Even flight levels shall be westbound; Odd flight levels shall be eastbound.