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As advanced aircraft gas turbine engines with increasingly longer life are produced, operating and support requirements become more demanding. O&S costs for commercial and government users of these more durable engines take a larger share of system total life cycle cost. More emphasis is placed upon an Engine Monitoring System (EMS) to reduce direct operating costs and related support costs. A greater need for improved interfacing of EMS equipment exists. Closer coordination is required among EMS participants: commercial and government users, aircraft manufacturers, engine producers and equipment suppliers. ARP 1587 is an SAE Aerospace Recommended Practice document that provides EMS guidelines for people, equipment, hardware and software. The document is a system guide that addresses in-flight and ground EMS applications. This paper presents ARP 1587 background and highlights. ARP 1587 draft preparation and related SAE E-32 Committee activity also are discussed.