Avionics News May 2020 - 22

space east of the Bay and across open water to cover the
southern tip of Greenland.
The company claims this expanded surveillance coverage
one of the 500-plus ground stations that make up the ADS-B
should save airline customers an estimated $374 million
network.
in fuel costs by this year by providing more fuel-efficient
That means U.S. operators with 1090ES as their AD-B Out
routes. The fuel saved will also reduce greenhouse gas
solution already meet the international standard. While many
emissions by about 982,000 metric tons.
1090ES solutions include a 978 MHz receiver to receive
But Canada's air navigation service provider in January
weather information, they won't be able to depend on getting
2019 revealed that as early as January 2021, it would require
weather in countries using only the 1090ES solution.
1090ES ADS-B Out with antenna diversity - diversity being
Whether any given nation is already using ADS-B for airthe term used to describe ADS-B systems using transponder
traffic surveillance is something to check before departing on
antennae on both the top and bottom of the aircraft fuselage.
an international trip. Let's take a look
Diversity, if required, for reliable
at which countries are doing what with
transmission and reception of ADS-B
their ADS-B implementation. We'll
broadcasts from a constellation of
NAV CANADA, THE
start close to home, looking at nations
orbiting satellites (see story on page 38).
COMPANY WHICH
frequented by American generalThat operational postponement does
OPERATES CANADA'S
aviation pilots.
not change Nav Canada's plans to rely
AIR-TRAFFICon the new Aireon space-based ADS-B
Up north in Canada
system. Aireon's satellites, already
SURVEILLANCE
The United States' nearest neighbor
orbiting and operational, opens up
SYSTEM, ANNOUNCED
to the north has changed its plans for
ADS-B coverage global.
LAST NOVEMBER THAT
ADS-B implementation, and those plans
Before using Nav Canada's ADS-B,
IT WAS DELAYING ITS
may yet change again. Nav Canada, the
flight
crew and aircraft operators
2021 MANDATORY
company which operates Canada's airshould familiarize themselves
COMPLIANCE
traffic-surveillance system, announced
with airworthiness and operational
DATE FOR ADS-B
last November that it was delaying its
requirements outlined in AIP Canada
AFTER COLLECTING
2021 mandatory compliance date for
ENR 1.6.3. There's more to learn
FEEDBACK FROM ITS
ADS-B after collecting feedback from
about these requirements online at
STAKEHOLDERS.
its stakeholders.
navcanada.ca/EN/products-andAt the time, Nav Canada noted
services/Documents/AIP/Current/
that it still plans to use ADS-B for
part_2_enr/2enr_eng_1.pdf.
surveillance in Class A airspace -
starting in February 2021. But, at that time, Nav Canada
Down south in Mexico
plans no mandate for equipage. Nav Canada's ground-based
Mexico planned to require ADS-B at the same time as the
ADS-B coverage expanded over the past year-plus, so that its
U.S., starting Jan. 1, 2020.
configuration now covers about 4 million square kilometers
But before 2019 ended, Mexico announced a delay in
of airspace.
implementing its rule for two years: until Jan. 1, 2022,
Nav Canada's delay announcement came in reaction to a
according to a circular issued by the Mexican civil aviation
letter, dated Oct. 21, 2019, from Transport Canada. In that
authority. According to the circular, when the requirements
letter, Transport Canada told the air-traffic-management
do take effect, they will apply to operations in Mexico Class
company that since a significant number of operators will not
A, B, and C airspace and Class E airspace above 10,000 feet
be able to meet the implementation timeline, Nav Canada
and other designated airspace.
must accommodate air operators ... as per current regulations
Mexico already requires ADS-B Out in Class E airspace
and practices." At least "until the proper regulation is in
over the Gulf of Mexico, at and above 3,000 feet MSL within
place and in force." So Canada's ADS-B performance
12 nautical miles of the Mexican coast. Mexico is not alone
requirements must face a conventional rulemaking process
in delaying ADS-B implementation, but Mexico's civil
before being enacted.
aviation authority gave no official reasons for the delay. The
But ADS-B is already in use in part of Canada - basically,
delay rationale, however, seems in line with the logic applied
Nav Canada's ADS-B in the far north, with ground stations
by other states in their decisions to push back previous
rimming the perimeter of Hudson Bay and spanning the
ADS-B compliance dates.
ADS-B INTERNATIONALLY
Continued from page 21

avionics news

may

2020

http://navcanada.ca/EN/products-and-services/Documents/AIP/Current/part_2_enr/2enr_eng_1.pdf http://navcanada.ca/EN/products-and-services/Documents/AIP/Current/part_2_enr/2enr_eng_1.pdf http://navcanada.ca/EN/products-and-services/Documents/AIP/Current/part_2_enr/2enr_eng_1.pdf

Avionics News May 2020

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