The current state for instrument approaches to aerodromes in Europe varies from Non Precision Approaches (NPA) (with lateral guidance only) based on ground NAVAIDS or basic GPS, to Precision Approaches (PA) (with lateral and vertical guidance) based on ground ILS or MLS systems. With the introduction of the SBAS systems augmenting the American GPS system (like EGNOS in Europe, WAAS in USA, MSAS in Japan or GAGAN in India), it has been possible to introduce new approaches, whose performance is between PAs and NPAs. These approaches with vertical guidance, called LPV/APV, provide the means to perform approaches with a performance close to the PA, but with no need of ground infrastructure.
The project objectives are:
- to accelerate the development, certification, installation and marketing of EGNOS-enabled avionics;
- to design, develop and publish details of EGNOS LPV approach procedures at airports throughout Europe. With the airline partners, an initial set of candidate airports has been identified, with a view to advantageous use of the LPV procedures for their operation;
- to commission aircraft into operation that are equipped and certified with the required avionics, with not only the EGNOS receiver but also the updated Flight Management System, which is the key avionics element to provide the aircraft with the capability to perform LPV approaches;
- to develop customised business cases for the partner airlines and end users by analysing real-life costs and benefits of using EGNOS;
- to promote the adoption of EGNOS in general/business aviation and regional airlines by the dissemination and awareness of the results and benefits to these communities through the various associations;
- to identify operational practices that will lead to a successful EGNOS adoption, knowledge building and dissemination to a Europe-wide network of aviation community members with a strong interest in GNSS technology, focusing on showing economic and operational benefits to end users.
ACCEPTA will provide a full-scale real-life operational context for the adoption and use of the EGNOS signal as a key positioning and navigation sensor that will produce valuable insights and economic data to drive the progress of GNSS programmes in Europe. The ‘business’ aspects of application of EGNOS-based LPV procedures will be the predominant area of research in this project. Also the validity of the EGNOS signal in space in support of these operations will be verified, to establish evidence of the business arguments of the airline and to assure that operations can indeed be executed.
Other impacts are:
- reduced operating costs:
- reduced costs associated with CA in terms of missed approaches, diversion of flights to alternate airports, etc.;
- less expensive onboard avionics equipment;
- elimination of ground NAVAIDS infrastructure;
- enhanced efficiency of aircraft operator operations, specifically flight operations;
- reduced operational costs, especially during the approach phase;
- optimised use of all resources for all involved partners;
- improved punctuality (on time performance) and reduced delays;
- greater flexibility in the planning and management of the flights.
Dissemination will be through the European Business Aviation Association (EBAA) and European Regional Airlines Association (ERAA), members of the ACCEPTA consortium.
Rockwell Collins UK