![]() ![]() To learn more details about PBN have a look at the presentation made by ICAO. The main difference in PBN when looking at RNAV and RNP is that RNP requires on-board performance monitoring and alerting. Consequently, any existing or new operational approvals will continue to be designated RNP 10, and any charting annotations will be depicted as RNP 10. Renaming current RNP 10 routes, operational approvals, etc., to an RNAV 10 designation would be an extensive and expensive task, which is not cost-effective. RNP 10 does not include requirements for on-board performance monitoring and alerting. The existing RNP10 designation for example is inconsistent with PBN RNP and RNAV specifications. Global differences among regulatorsĪs there are a lot of different regulators around the world, not all are using the same terminology. In this situation the operator needs an approval as well. Which stands for Required Navigation Performance Authorisation Required and Required Navigation Performance of 0,3 NM for helicopters. In addition to this, within PBN there are two categories that needs separate approval, RNP AR APCH and RNP 0.3 (H). The operator needs to establish procedures for PBN –.The aircraft needs to be PBN approved –.This means four things are needed to actually utilise PBN: PBN: area navigation based on performance requirements for aircraft operating along an ATS route, on an instrument approach procedure or in a designated airspace. Navigation performance around the world uses different terminology so it was also agreed to convert to a single, standard terminology which is all based on the term PBN. Due to enhancing performance it could create more room for aircraft flying closer to each other. Maintenance and navigation errors of ground-based navigation systems like NDB and VORs showed that GNSS would enhance navigation performance and would be more cost efficient. ![]() In the third edition of that plan it is stated that the ultimate goal is to transition to GNSS that would eliminate the requirement for ground-based aids because these systems are more reliable and precise. In 2002 ICAO published the Global Air Navigation Plan (second edition) that stated that states should identify the elements of GNSS that are provided and look at the economic savings when decommissioning ground-based navigational aids. While an NDB approach is still mandatory to train for your license, it is hardly used anymore for commercial flights. This means that many, expensive ground-based beacons are being dismantled. The first GNSS systems were not very accurate, but as time has passed, they have become very precise in location determination as well as elevation. The solution came towards the end of the 20 th Century when Global Navigation Satellite NSS systems came into play. Although the latest IRS were very precise, there were still challenges. ![]() The downside of the land based beacons was their range and errors, and for the IRS that they would wander after a while giving an incorrect position. To help even more, Inertial Reference Systems (IRS) were developed to provide electronic references with global coverage. The next step in navigation saw beacons on land, which meant we could fly around without needing visual clues. ![]() When we first started flying, navigation was based on looking outside the window at landmarks. And if you still have any questions after reading this, do not hesitate to add them in the comments! Some history about navigation in aviation This article will give you an easy overview of all the aspects you have to consider. The challenge, especially for some small operators and/or flight schools is to understand what they have to do about PBN and its associated rules. It may be required in specific airspace and at certain airports depending on the situation. Performance based navigation (PBN), has already been implemented in some countries and in some it is about to be. Understand more about PBN and what it means for your operation? At the bottom the article is also provided as a handy PDF guide.Ģ5 January 2022: Check out the new EASA FAQs on PBN Airspace Usage Requirements on the EASA Website. The article was written by our safety partner Stephen van Houwelingen from STAC as part of his own journey to implement PBN in a small operator. If you are trying to understand Performance Based Navigation (PBN) this article will provide you with all the information you need. ![]()
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