The document outlines the development and objectives of an Advanced Receiver Autonomous Integrity Monitoring (ARAIM) system aimed at enhancing navigation integrity for civil aviation. It details the project's structure, expected performance assessments, and the eligibility criteria for applicants, as well as the project's financial aspects and reporting requirements. Additionally, it sets timelines for the call for proposals and implementation phases, emphasizing the need for collaboration among eligible participants in the GNSS domain.