<p>This&nbsp;EASA notice of&nbsp;proposed&nbsp;amendment (NPA) addresses two different subject matters in support of operations in the single European sky (SES)&nbsp;air traffic management (ATM) program:&nbsp;the use of airborne collision avoidance system (ACAS) Xa and the harmonized use of performance-based navigation (PBN) specifications for oceanic operations. ACAS Xa is one of the&nbsp;SES&nbsp;solutions that has been adopted as&nbsp;an ICAO&nbsp;standard that&nbsp;will eventually replace ACAS II to increase the already high level of safety in ATM. In addition to proposing a regulatory change to enable the use of ACAS Xa in SES airspace, this NPA includes regulatory changes proposing&nbsp;the&nbsp;installation requirements for ACAS Xa. To ensure an effective transition to a PBN operational environment in the SES airspace, this NPA also proposes to transpose additional ICAO PBN specifications in support of oceanic and remote continental operations, in particular the RNP 4 and RNAV 10 specifications.&nbsp;Comments on the NPA are due by Aug. 28, 2023.</p>


Europe: ACAS and PBS

2024 Corporate Aviation Leadership Summit

Europe: ACAS and PBS

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