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Status and integrity of the GPS position solution shows on the MFD LRN STATUS page. RAIM is used to assure that the GPS solution meets the required accuracy criteria that follow: -4 nm for oceanic/remote -2 nm for enroute -1 nm for terminal -0.3 nm for approach The measured accuracy limit indicates the maximum estimated error based on measurement inconsistency. When an error is detected, it is annunciated on the LRN STAUS page. The LRN STATUS text page on the MFD shows: -Each installed GPS -Current latitude and longitude position of each sensor -Current tracking direction and speed of each sensor -Current operating mode of each sensor -Number of satellites in use by each sensor -RAIM accuracy limit of each sensor -Measured accuracy limit of each sensor -Probable error of each sensor REQUIRED NAVIGATION PERFORMANCE (RNP) RNP is a statement of the navigation performance accuracy necessary for operation within a defined airspace. The RNP value may be specified by the pilot by entering the value on the FMS PROGRESS page. The FMS computes its expected position accuracy based on the sensors in use. The expected position accuracy (POS ACCURACY) is also displayed on the PROGRESS page. When flying in RNP airspace the FMS position error should be less than the RNP value 95% of the time. If the expected position accuracy error is more than the RNP value, a message LOW POS ACCURACY is displayed on the CDU and navigation by other means must be utilized. SATELLITE DESELECT EXEC 1/2 TUNE DME/H NAVSRC MENU DATA FRMT TFC TR/WX TILT RANGE 中国公务机网 www.gongwuji.com 公务机翻译 www.aviation.cn 本文链接地址：庞巴迪挑战者300公务机机组操作手册 Bombardier Challenger-导航(26) |
