Aircraft propulsion technology continues to evolve and advance to meet changing requirements and challenges for improved performance and capabilities. This continuing evolution leads to a growing complexity of station numbering schemes, which are presented in AS755. An industry desire to expand nomenclature descriptions has also emerged. To facilitate future expansion of these standards, a decision was been made to divide the “station numbering” and “nomenclature” contents of AS755 into separate documents. AS755 will continue to maintain standards for station numbering. A new SAE Aerospace Standard, AS6502, will maintain standards for classical nomenclature moving forward. Both documents will continue to be revised and expanded as industry needs dictate.