Pilot's Guide to Avionics 2015-16 Edition - 31
ADS-B data between the Australian and Indonesian FIRs
ADS-B Down Under
in November 2010.
Australia is a continental-size island approximately
This world-first ADS-B data exchange allows air traffic
equal in landmass with the lower 48 states of the U.S.,
controllers to precisely track aircraft up to 150 nautical
as well as Europe. With the bulk of its population conmiles inside each country's airspace.
centrated along its coasts, Australia in 2004 boasted
suronly 20 aircraft radar control areas - strung along the
ADS-B also has extended Airservices real-time sur
east and southeast coasts.
veillance of air traffic toward the boundary of Australia's
Airservices Australia has been implementing ADS-B
flight information region with New Zealand, midway
services in stages during which time surveillance coveracross the Tasman Sea.
age progressively increased. According to the agency,
Back over Australia, ADS-B coverage has improved
current coverage comes from a system of 29 ADS-B
vastly since its system went live, with the addition of
installed ground-stations scattered
ground stations nationwide plus
across the bush.
14 ADS-B capable multilateration
bush Coverage is now
sites in Tasmania and 16 sites in
ON SOME LEVELS,
At FL285 and above, ADS-B coverthe Sydney basin.
age extends beyond the coastlines; at
These stations now deliver
10,000 feet mean sea level, it is nearly
continuous surveillance of aircraft
operations in high-level airspace
ABROAD APPEARS uniform across the country - all the
coastlines and across its vast interior.
across western, central and northinterior
Conversely, down at 5,000 feet msl,
ern Australia where radar covercoverage shrinks to a bit more than half
age does not currently exist. And
the country. And those additional ground
the network may get another 14
THAN IN THE U.S.
stations would add further to the lowground stations now under conNONETHELESS, SOME
altitude coverage availability.
sideration to support the needs
But Dunstone would not characterize
of airlines, regional and general
OF THE ISSUES IN THE
as " being ahead" of the U.S. " I
U.S. RIPPLE THROUGH
don't characterize it like that," he said.
According to Greg Dunstone,
" Australia and the U.S.
ADS-B manager for Airservices
U are different
SUCH AS AUSTRALIA,
environments with different needs."
ACCORDING TO VOICES
Before ADS-B, Australia had very
ADS-B has been
limited surveillance across the whole
operational in Australia
IN ITS AVIATION
delivering 5 nautical mile
" Only 20 radars in an area roughly
separation services for a
the same size as the contiguous U.S.,"
he said. " And don't forget that the U.S.
All en route sector
positions countrywide can display ADS-B tracks.
had Alaska operating ADS-B very early
More than 99 percent of flights at/above FL290
But the path to both coverage and acceptance has
are already equipped.
not been without its turbulence
More than 61 percent of all IFR flights continent
wide are equipped.
A missed opportunity
Several voices from the Australian avionics community
Australia mandates all IFR aircraft to be ADS-B
noted that had things worked differently, the nation could
Out equipped in February 2017.
have saved itself - and its constituencies - some signifi*
Australia does not have the complication of a
cant Australian dollars.
dual link system; it uses 1090 ES only (no UAT).
According to Jason Burzacott with Australian Avionics in
" We plan to decommission four radars in 2017,
North Cairns, " Australia missed a golden opportunity when
saving money for our industry - we will use a
the en route radars came up for replacement. There was
mixture of ADS-B and radar," Dunstone said.
an opportunity to spend the money on subsidizing ADS-B
fit outs for operators in lieu of a portion of the radars. This
Additionally, Airservices Australia and the Indonesian
Continued on following page...
Directorate General of Civil Aviation started exchanging
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