Boeing AERO Magazine A quarterly publication for Boeing Commercial Airplane customers. Copy excerpt: PBN is a concept used to describe navigation performance along a route, procedure, or airspace within the bounds of which the airplane must operate. For transport airplanes, it typically is specified in terms of required navigation performance (RNP). The PBN concept defines navigation performance in terms of accuracy, integrity, availability, continuity, and functionality. These operations provide a basis for designing and implementing automated flight paths that will facilitate airspace design, terminal area procedure design, traffic flow capacity, and improved access to runways (more information about PBN can be found in AERO second-quarter 2008). The PBN concept is made possible largely by advances in the capabilities of airplane FMS. Download PDF (1.5 Mb) Request printed sample