The ARINC 424 standard defines a used to encode aeronautical data. Supplement 17 specifically introduced critical updates to support emerging satellite-based navigation technologies, such as the Path Point Record , which is vital for the Final Approach Segment (FAS) data block used in WAAS/GPS approaches. Key Technical Components navigation system data base - arinc specification 424-17
ARINC 424 is the international standard for the preparation and transmission of data for the assembly of airborne navigation system databases. , published in August 2004, is a specific version of this standard that provides essential updates for RNAV (Area Navigation) and RNP (Required Navigation Performance) operations. Overview of ARINC 424-17
