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related to the 2008 summer season with approximately
180 proposals for the summer of 2009 and somewhere
in the order of 130 for the following summer.
Preparation for implementation of the ‘Free Route’ or
‘Free Route-like’ initiatives also started in 2008 and concrete
implementation plans are now under way. These
will begin to materialise through the implementation of
Free Route Airspace in Portugal and Sweden as well as
implementation of direct night routes in several States.
For the 50 most penalised city pairs, the Agency developed
a detailed catalogue of improvement proposals,
as well as operational assessments of those proposals,
which were subsequently provided to States and
ANSPs. More detailed implementation projects will be
developed either by States or by Functional Airspace
Block (FAB) initiatives and will be coordinated by the
relevant expert EUROCONTROL groups. Route network
Some 10,000 nautical miles
were saved as a result of the
implementation of an enhanced
route network, equating to an
annual reduction of 22,000 tonnes
of fuel.
1- 1NM = 1.8532 km
EUROCONTROL Annual Report 2008 41
improvement proposals were – or will be – gradually
deployed, some designed initially to implement an
improved night route network.
CDA project
A Continuous Descent Approaches (CDA) development
project was put in place to implement EUROCONTROL’s
recently published, ICAO-endorsed CDA concept. In addition,
the CDA Implementation Guidance document,
developed with stakeholders to explain how the more
efficient flight profiles can be implemented, is now available.
Over the years EUROCONTROL has tested CDAs at
several European airports, using commercial aircraft,
and has confirmed that noise, fuel burn and emissions
can all be reduced. A joint industry CDA action plan was
prepared to accelerate its deployment to help meet implementation
targets. More details are one page 50.
A-CDM initiatives
The concept of Airport Collaborative Decision-Making
(A-CDM) aims to bring all the main airport partners
together and share operational data in a transparent
manner. Information sharing is essential for achieving
common situational awareness. Enhancing decisionmaking
processes will lead to maximised operational
efficiency and best use of the available airport infrastructure
and resource management.
To date, A-CDM has produced significant guidance material
for airports to implement collaborative decisionmaking
locally.
CASSIS project
A key challenge Europe is facing in the medium and
long term is to decrease the time aircraft have to
spend in orbital holdings and on extended level segments
during arrival at airports. Therefore, in June
2008, EUROCONTROL initiated a series of flight trials
at Stockholm’s Arlanda airport in order to validate the
airborne Controlled Time-of-Arrival (CTA) functionality.
Conducted under the aegis of the EUROCONTROL
CTA/ATC Integration Studies (CASSIS) project, the aim
is to explore the feasibility of this concept by carrying
out several hundred trials with revenue-flights into
Arlanda.
The initial wave of flight trials was conducted between
early June and the end of July and was followed by a second
wave running from September to December 2008.
At the end of 2008, a total of 308 flight trials had been
conducted. These trials help to investigate the accuracy
of the aircraft flight management system in meeting
times to points within the terminal area, including the
runway. Trials will also be carried out at London Heathrow
and Amsterdam Schiphol airports. In 2009, CASSIS
will deliver a concept of operations based on the SESAR
concept as well as a description of the steps that will
bring CTA applications into operation.
Achieving efficiency
through flexibility
Freeing up airspace that was previously reserved solely
for military purposes allows the implementation of
conditional routes (CDRs) across that airspace when it
is not in use. According to an assessment made in 2008,
the number of published CDR 2 (non-permanently
planned) and CDR 1 (permanently plannable/2) routes
increased by 16%, from 432 in January 2007 to 503 in
December 2008.
Furthermore, during the year, approximately 9,500 NMs
per day were saved as a result of improved CDR utilisation.
This brings an improvement of more than 2,700
NMs per day compared to 2007 and represents a similar
amount of fuel and CO2 savings per year as the airspace
design enhancements.
In 2008, approximately 9,500
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