The European Geostationary Navigation Overlay Service (EGNOS) has released its new Service Definition Document (SDD) v3.6 for the Safety of Life (SoL) service for aviation.

The new document outlines and describes several changes designed to improve the precision, reliability, and safety of EGNOS satellite navigation-based operations.

SDD v3.6 also describes new improvements in EGNOS architecture, encompassing both space and ground segments.