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- W2183638807 abstract "The Swiss-wide Implementation Programme for SESAR-oriented objectives (CHIPS) aims at implementing new and operationally beneficial technologies and procedures in the Swiss air traffic system. An efficient management of the dense airspace in the vicinity of airports in line with noise protection expectations for the local residents asks for new, tailored procedures. Among these, required navigation performance RNP1 operations including curved segments, the so-called radius to fix (RF) leg functionality, fulfil these demands. RF legs significantly reduce the dispersion of flight tracks. On 18 October 2012, a first departure procedure with an RF leg has been implemented at Zurich airport. Pilots, depending on aircraft capabilities, may now choose between the conventional and the new RF leg departure. A monitoring system has been established in order to assess the utilisation of the RF leg procedure as well as the navigation performance of the flown flight tracks. Nearly one year of data with more than 1000 flight tracks are now available. Several aircraft types, covering all seasons and many different weather conditions were recorded. Deviations from nominal tracks have been assessed based on PSR/SSR data as well as on ADS-B information. In general, the RF leg track distribution changes considerably compared to the conventional departure procedure. A high-precision navigation performance is achieved. Even older airplanes show only small deviations from the nominal track. An analysis has been carried out to determine the statistical parameters on the cross-track error distribution. RNAV/RNP1 requires a 95% accuracy of 1 NM. The achieved 95% accuracy level is roughly 0.1 NM, whereas the maximum errors rarely exceed 0.3NM. Consequently, the accuracy requirements are exceeded by one order of magnitude. In conclusion, this first RF leg application in Switzerland shows the benefit of advanced RNP operations and will certainly lead to further implementations of departure procedures and also facilitate the introduction of so-called ‘curved’ approach operations. A first curved-approach project has already been initiated at the Swiss Air Force base, Dubendorf." @default.
- W2183638807 created "2016-06-24" @default.
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- W2183638807 date "2013-01-01" @default.
- W2183638807 modified "2023-09-27" @default.
- W2183638807 title "RF leg for departures: One year of successful experience" @default.
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