This EASA notice of proposed amendment (NPA) addresses two different subject matters in support of operations in the single European sky (SES) air traffic management (ATM) program: 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 SES solutions that has been adopted as an ICAO standard that 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 the 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. Comments on the NPA are due by Aug. 28, 2023.
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502332346