Use the initial inputs  to compile an OSED  Solution  ConOps Other  OSAs Shortfall  Analysis System  Description FA FHA SCT  Analyses/ Assessments Develop a PHL Conduct Hazard  Severity Analysis Identify safety objectives and requirements  from PHL and severity analysis OHA Develop the ASOR  Document the OSED,  OHA, and ASOR and  compile into OSA OSA complete  Figure C.1: OSA Inputs, Components, and Methodology  3.3  OSA Components 3.3.1 OSED  3.3.2 OHA  3.3.3 ASOR  The OSA components are described in  Section 3.3.1 through Section 3.4.3.  The OSED describes the service characteristics of the solution concept in an operational  environment. This description includes both ground and air elements and must include all  elements of the 5M Model (as discussed in the SMS Manual). The OSED is used as a  mechanism platform to describe the service provided by the solution, the users of the solution,  and the varying operational and environmental considerations in which the service is provided  for the related Communication, Navigation, and Surveillance (CNS) and Air Traffic  Management (ATM) system. The description provided by the OSED is used as a baseline and  solution boundary from which to conduct the safety assessment.  The OHA assesses the operational hazards associated with the shortfall described in the  OSED. It determines the severity of each hazard so that operational objectives and safety  requirements can be identified for any solution that results in an acceptable level of safety risk  when deployed.  The operational objectives and safety requirements identified in the OHA form the basis for  assessing the safety of any developed solution. For OSAs conducted across multiple domains,  the ASOR allocates the safety objectives and requirements to the service level (e.g., Air Traffic  Services or Flight Standards Service), develops and validates risk mitigation strategies shared  by multiple organizations, and allocates safety requirements to those organizations. For OSAs  conducted within a domain or at a distributed level, the ASOR allocates the mitigations and  controls to their respective disciplines (e.g., equipment specification, procedure requirements,  training, logistics, and maintenance).  C_SRMGSA_202003  Originally published March 2020  Uncontrolled copy when downloaded  C-3