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Airlines operating Boeing 737s in Europe have been given the
"Green light" to use an optimized landing approach that significantly
reduces the amount of fuel used during arrival and approach
operations, thereby reducing CO2 and NOx emissions by roughly 20%
compared to standard arrival procedures.
The "Advanced Continuous Descent Approach" (A-CDA), also known as
the "Green Approach", is the result of GE Aviation's Systems
division's (formerly Smiths Aerospace) successful participation in
Europe's NUP2+ project, whereby select 737 aircraft in Sweden are
allowed to employ GE's Flight Management System (FMS) to fly the
aircraft at idle thrust from cruise through landing. The FMS' reliable
performance and predictability gave Air Traffic Management (ATM)
authorities the confidence they needed to approve the new approach in
Europe for 737s equipped with GE's FMS.
"Our FMS on Boeing 737s is another example of how committed we are
to developing technology solutions that not only benefit customers,
but are also kind to the environment," said Dr. John Ferrie,
President, Systems for GE Aviation. "Given the issues we face with
growing air traffic congestion and increasing green house gases
worldwide, the appropriate use of FMS to help remedy the situation is
a clear and valuable option."
GE's FMS on the Boeing 737 uniquely features a precise,
4-dimensional trajectory downlink for use by ATC to manage traffic
flow using precision positioning and time guidance, known as Required
Time of Arrival (RTA), to the runway threshold. Combined, these
features enable the creation of flight profiles that are optimal for
operators as well as the environment - increasing ATM efficiency,
providing fuel savings, and dramatically reducing greenhouse gas and
noise emissions.
Today, the "Green Approach" is a regular money and
environment-saving feature of Scandinavian Airlines (SAS) operations
into Stockholm, where, in more than 1,300 Green Approaches, SAS has
recorded an average fuel savings of 186 kg, a CO2 reduction of 315 kg,
and an NOx reduction of 0.011 kg per arrival. SAS estimates that
annual benefits for their flights arriving at Stockholm Arlanda
airport, could reach $6 million in fuel savings with an additional $6
million in cost avoidance due to the increased efficiency and
punctuality of aircraft using GE's FMS. SAS expects the Green Approach
to achieve annual emission reductions of up to 23,000 Metric Tons of
CO2 and 79 Metric Tons of NOx; comparable to the yearly emissions of
5,100 automobiles.
Green approaches also deliver measurable noise reduction for the
surrounding communities. As a result, SAS and the Swedish government
have agreed to expand the Green Approaches to the other busier
airports in Sweden, and plans are being discussed with more airlines
and ATM authorities to allow its use during city-pair operations
between Stockholm and aerodromes within core-Europe.
GE Aviation, an operating unit of General Electric Company
(NYSE:GE), is a world-leading provider of commercial and military jet
engines and components as well as integrated digital, electric power,
and mechanical systems for aircraft. GE Aviation also has a global
service network to support these offerings. For more information,
visit us at www.ge.com/aviation.
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