NextGen Works for Washington State

NextGen is an FAAled collaborative modernization       Navigation Performance (RNP). RNAV permits aircraft
effort that is moving the National Airspace System         to y any desired ight path within the coverage of
(NAS) from groundbased analog technologies to         ground- or space-based navigation aids, within the limits
new smarter, satellitebased and digital systems and        of aircraft avionics, or with a combination of avionics
procedures. NextGen is making aviation safer, more       and navigation aids. RNP increases the precision
efcient, and better for the environment.                   of RNAV to operate safely near high terrain or in
congested airspace through an onboard performance
The FAA expects NextGen to deliver $161 billion in       monitoring and alerting capability.
benets to aircraft operators, government, passengers,
and the general public through 2030. So far, NextGen     Twelve airports across the state publish one or more
has delivered $2.7 billion in benets. The following         of these PBN procedures: RNAV Standard Instrument
programs and technologies are improving the ying       Departures (SID), RNAV Standard Terminal Arrivals
experience in the sides over Washington state:              (STAR), and RNP approaches.

RNAV (GPS) \X'ide Area Augmentation System
Performance Based Navigation     (WAAS)-capable approach procedures are available
PBN delivers routes and procedures that use primarily     at 35 Washington airports, enabling instrumentrated
satellite-based navigation and advanced avionics to         pilots to le a ight plan and y to these airports during
y with greater precision and accuracy than ground-       lowvisibility weather conditions. WAAS is a system of
based navigation aids and standard equipment. Benets    satellites and ground stations that correct GPS signals
include shorter and more-direct ight paths, improved     for better position accuracy. It allows the FAA to design
airport arrival rates, enhanced controller productivity,       satelliteenabled approach procedures with vertical and
increased safety due to repeatable and predictable ight    horizontal guidance, improving safety regardless of
paths, fuel savings, and reduced exhaust emissions.         visibility or whether the approach is own during the
PBN comprises Area Navigation (RNAV) and Required   day or at night.


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NextGen Works for Washington State

Optimized Profile Descent          Out relies on aircraft avionics, a constellation of GPS
satellites and a network of ground stations across the
An OPD is a PBN arrival procedure designed to reduce
country  including those located across Washington
level offs during descent, saving fuel as well as reducing
state  to transmit an aircraft's position, ground speed,
emissions and noise. By using a combination of RNAV    and other data. Its coverage area and accuracy are far
STAR and RNP approach procedures, some ights into
greater than radar, updating the location of an aircraft
SeattleTacoma International Airport are even more
every second, compared to radar, which has an average
efcient from initial descent all the way to the runway.      refresh rate of 5 seconds around airports and 12

seconds in en route airspace.
Greener Skies over Seattle
SeattleTacoma served an estimated 45.7 million           The FAA has mandated that aircraft operating in most
passengers in 2016, nearly 8 percent more than 2015,      controlled U.S. airspace be equipped for ADS-B Out
making it the ninth-ranked U.S. airport in passenger        byJanuary 1, 2020. ADS-B In, which is optional, offers
numbers. Washington state's busiest airport is a main       more choices to operators who equip, such as a display
hub for Alaska Airlines and its regional subsidiary,          of other nearby aircraft.
Horizon Air, and is a gateway to Asia and Europe for
Delta Air Lines. Such prominence made Greener Skies,    Data Communications
a collaborative project involving the FAA, airlines,          Data Comm improves how pilots and air trafc
the Port of Seattle, and the Boeing Corp., even more
controllers convey critical ight information. Digital
signicant. By adding 27 new procedures, including        text~based messages supplement the analog voice system
more RNAV arrivals with OPDs and RNP approaches,    and swiftly deliver clear, accurate information.
aircraft are burning less fuel and creating fewer
emissions and less noise.
SeattleTacoma International Airport uses the Data
Comm tower service, which speeds up departure
Automatic De endent             clearances and can prevent delays or cancellations.
Surveillance-  roadcast             Data Comm minimizes misunderstood or missed
ADSB, a modern system to track airplanes and a          messages over congested radio frequencies, and provides
foundation of NextGen, helps pilots and air trafc         controllers and pilots more time to concentrate on other
controllers create a safer, more efcient NAS. ADSB      critical tasks,







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