RNAV Navigation Specifications (Nav Specs) Nav Specs are a set of plane and aircrew needs required to help a navigation application inside a defined airspace principle. For both RNP and RNAV designations, the numerical designation refers to the lateral navigation accuracy in nautical miles which is expected for being achieved https://pbn71481.arwebo.com/54130013/not-known-factual-statements-about-pbn