7  Product Development in the AMS Lifecycle  7.1  Service Analysis and Strategic Planning  / Concept and Requirements Definition  7.2  Investment Analysis  7.3  Solution Implementation  Planning for development assurance needs to begin early in the AMS lifecycle so the DAL can  be factored into the business case. Typically, this occurs prior to the Investment Analysis  Readiness Decision while the Operational Safety Assessment (OSA) is being developed. The  DAL is initially established from the OSA and is included in the preliminary Program  Requirements Document (PRD). More information on Service Analysis and Strategic Planning  or Concept and Requirements Definition is available on the FAA Acquisition System  Toolset (FAST) website.  The DAL is validated in the Comparative Safety Assessment, which may differ between  investment alternatives. The DAL for the alternatives is then included in the business case and  Implementation Strategy Planning Document (ISPD) prior to the Initial Investment Decision. The final DAL is determined from the Preliminary Hazard Analysis. This final DAL is included in  the final PRD and Program Safety Plan (PSP). Any changes to the DAL are included in the final  versions of the business case and ISPD prior to the Final Investment Decision. More  information on the Investment Analysis is available on the FAST website.  Prior to contract award, the DAL is established based only on functional requirements. After the  initial establishment of the DAL and contract award are completed, the developer performs  hazard assessments in accordance with the contract. It is important to validate that the  appropriate DAL has been assigned to each safety hazard and allocated to the correct safety  requirements after the developer hazard assessments are performed and after any change in  system requirements.  It is critical to provide development assurance oversight throughout  Solution Implementation (SI)  because various objectives must be met during this phase. Noncompliance discovered late will  require rework, resulting in cost and schedule overruns. The PSP should identify intervention  points and monitoring objectives to ensure the developer is meeting development assurance  requirements. More information on SI is available on the FAST website.  J_SRMGSA_202003 Originally published March 2020  Uncontrolled copy when downloaded J-9 