Explanatory Statement – AERU 05-31/ Class C Control Zones
Purpose: All changes to airspace are given legal effect by the raising of a valid Legislative Instrument, signed by the appropriate delegate. The permanent description of airspace is published in the AIP MAP products (as defined in ICAO Annex 15) and in the Designated Airspace Handbook (DAH). The DAH is issued on an alternating approximate 24/28 week cycle. The DAH lists and describes, in tabular form, the lateral and vertical limits and any other pertinent details of airspace volume.
Operation: The Class C Control Zones legislative instrument describes the area which has been determined as necessary to contain the paths of IFR flights arriving and departing from aerodromes to be used under instrument metrological conditions.
The preface in this instrument allows air traffic controllers the flexibility to be able to reduce or extend the tower hours and associated control zone for a temporary period to meet operational demands.
Impact: The impact on the determination of Class C Control Zones is expected to be negligible. These zones are established for current IFR and VFR operations within the Australian flight information region and there are no new additions in this DAH issue.
The Office of Regulation Review determined this instrument appeared unlikely to have direct or significant indirect impact on businesses and therefore confirmed a Regulation Impact Statement would not be required.