METHOD FOR IMPLEMENTING REQUIRED NAVIGATIONAL PERFORMANCE PROCEDURES

摘要

A method (200) is disclosed for designing an RNP approach for an aircraft at aparticular runway (90). The method includes selecting a runway (201),gathering obstacle data for the obstacle evaluation area (202), selecting aVEB method and terms (204), laying out a preliminary approach, inducing amissed approach segment (206), calculating a preliminary obstacle clearancesurface (208), calculating a momentary descent segment using a physical modelof the aircraft (210), adjusting the obstacle clearance surface so that noobstacles intersect the surface (212), and optionally optimizing the approachby departing from the operator's standard procedures (214). Preferably, theobstacle clearance surface is adjusted so that it just touches an obstacle,without any object intersecting the surface, thereby providing an optimaldecision altitude.