Operational Suitability Data (OSD) refers to a suite of data which is required to be established by aircraft manufacturers under the control and oversight of EASA Part 2. OSD is considered as Data which is important for the safe operation of aircraft type.
The CMP document is approved by the Primary Certifying Authority and contains the particular airplane configuration minimum requirements, including any special inspection, hardware life limits, master minimum equipment list (MMEL) constraints and maintenance practices found necessary related to the performance of ETOPS – Extended Diversion Time Operation (EDTO) Flights.