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if normal operations applied;
b. civil flights requiring passage through a military airspace when
weather conditions or other factors make flight on the normal
air route inadvisable, or impossible, and when other routes are
unavailable, or the use of such routes would impose severe
economic penalties on the operation of the aircraft.
5.1.2 There are two types of airspace reservations: fixed defined areas
and “mobile” (eg, aerial refuelling, en route formation flights, etc).
Such reservations are normally only applied during limited periods.
A designated airspace or portion thereof under the control of
a military ATC authority may also be reserved to confine particular
activities. In such airspace, RAAF ATC shall be responsible for the
provision of separation for transiting civil or military aircraft from
areas reserved or restricted for current air defence operations.
5.2 General
5.2.1 Airspace in which a potential hazard to aircraft operations may
exist, and all areas over which the operation of civil aircraft may be
restricted are promulgated as follows:
a. Prohibited Area. Airspace within which the flight of aircraft is
prohibited.
b. Restricted Area. Airspace within which the flight of aircraft is
restricted in accordance with specified conditions.
c. Danger Area. Airspace within which activities dangerous to
the flight of aircraft may exist at specified times.
5.2.2 These areas are promulgated in the DAH and are shown on AIP
aeronautical charts by boundaries outlined in magenta and containing
the identification of the area as a letter and a number.
The letters allocated are:
P = Prohibited area
R = Restricted area
D = Danger area, and the number identifies the area.
GEN TOC ENR TOC AD TOC Index
ENR (EN ROUTE) A/L 45 effective 24 NOV 05
When used internationally, the identification of these areas is preceded
by a FIR identifier as follows:
Brisbane = YB
Melbourne = YM
Details are shown in ERSA or NOTAM.
5.2.3 Unless otherwise specified, vertical limits are promulgated as
AMSL when at or below the transition altitude, or as a flight level
when above the transition altitude. The abbreviation “SFC” means
the surface of the ground or water. “NOTAM” indicates that the
vertical limits or hours of activation will be notified by NOTAM.
5.2.4 The promulgated vertical limits of prohibited and restricted areas
include all the buffers necessary for the protection of aircraft operating
outside these areas. Therefore, the promulgated levels may
be used by aircraft avoiding the areas, except where the vertical
limit abuts controlled airspace, in which case, a clearance is required.
5.3 Flight within PRD Areas
5.3.1 Flight within a prohibited area is not permitted in any circumstances.
5.3.2 Approval for an aircraft to fly within an active restricted area or airspace
depends on the location of the airspace and the type of activity
being conducted in that area or airspace, at the time. Pilots
desiring access to a restricted area or airspace should request
clearance from ATC in the same manner that clearance to enter
controlled airspace is requested. Clearances are generally only
withheld when activities hazardous to the aircraft are taking place,
or when military activities require absolute priority for service.
When clearance is granted, the flight must be conducted in accordance
with the conditions and instructions specified by the ATC
unit.
5.3.3 Civil aircraft operating in military Restricted areas or airspace in
which an ATC service is provided will receive a service equivalent
to that of Class C airspace unless specified otherwise in ERSA
FAC.
5.3.4 When compliance with an air traffic clearance requires flight:
a. from controlled airspace into an adjoining active restricted area
or airspace, or
GEN TOC ENR TOC AD TOC Index
ENR (EN ROUTE) A/L 45 effective 24 NOV 05
b. through an active restricted area or airspace into adjoining controlled
airspace, or
c. through an active restricted area or airspace within controlled
airspace,
the pilot in command may assume that ATC has obtained approval
for the flight. The flight path must comply with prescribed controlled
airspace procedures.
5.3.5 When flight within an active restricted area or airspace is required
in circumstances other than those specified in this section, operators
must submit a request to ATS for specific approval to enter.
Approval for flight within a danger area outside controlled airspace
is not required.
6. LANES OF ENTRY
6.1 Lanes of entry are established to permit passage to and from a
　
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