CTHRepealedLegislation
CASA OAR 182/09 - Determination of airspace and controlled aerodromes etc
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3 Definitions
In this instrument:
AIP includes a NOTAM.
hours of activity means the hours during which:
(a) the air traffic control service for a volume of airspace remains available; and
(b) the volume of airspace retains its initial classification.
initial classification has the meaning given in subsection 5 (1).