PBN stands for Performance-Based Navigation in aviation. It's a framework that specifies aircraft navigation performance requirements based on satellite and onboard systems rather than traditional ground-based radio beacons. Instead of flying from one VOR station to another in zigzag patterns, aircraft equipped with PBN can fly direct, optimized routes. PBN encompasses two main types of navigation specifications. Area Navigation (RNAV) allows point-to-point navigation on any desired flight path within coverage of navigation aids or within the limits of self-contained systems. Required Navigation Performance (RNP) adds an onboard monitoring and alerting requirement, meaning the aircraft continuously verifies it's staying within the required accuracy threshold. The practical benefits are significant. Airlines save fuel by flying shorter, more direct routes. Airports can handle more traffic because approach paths can be designed with tighter separation. In mountainous terrain or areas with limited ground infrastructure, PBN enables access to airports that were previously difficult to serve. Canadian airspace, including major hubs like Ottawa, Toronto, and Montreal, has progressively adopted PBN procedures since the mid-2000s. Nav Canada has implemented PBN across the country for both enroute navigation and precision approaches. Modern aircraft use GPS as the primary sensor, augmented by systems like WAAS in North America or combining multiple satellite constellations. Accuracy requirements vary by operation, from RNP 10 for oceanic routes (10 nautical mile accuracy) down to RNP 0.1 for precision approaches. This has nothing to do with Private Blog Networks in SEO, which share the same acronym but exist in a completely different domain. In aviation contexts, PBN always refers to the navigation framework. If you're researching link building strategies and encountered this term, you likely crossed into aviation content, which happens when agencies like ours analyze diverse client industries or when doing competitor research across sectors.