MlL-STD-1798C APPENDlX A
functional baseline. System performance may be decomposed and traced to lower-level subsystem functionality that may define hardware and software requirements. The SFR is conducted during the Technology Development Phase.
Preliminary Design Review (PDR): The PDR is a multi-disciplined technical review to ensure the system under review can proceed into detailed design, and can meet the stated performance requirements within cost (Program budget), schedule (Program schedule), risk, and other system constraints. Generally, this review assesses the system preliminary design as captured in performance specifications for each configuration item (Cl) in the system (allocated baseline), and ensures each function in the functional baseline has been allocated to one or more system configuration items. A series of PDRs are normally held late in the Technology Development Phase phase for new developments. A PDR is held for each Cl or aggregation of Cls in the specification tree. lndividual Cl PDRs should ensure a preliminary Cl architecture is complete; a Cl development specification is complete or the development specification approved; and that a preliminary allocated baseline is complete or the allocated baseline approved. A system PDR is held after completion of all Cl and aggregate of Cls PDRs.
Critical Design Review (CDR): The CDR is a multi-disciplined technical review to ensure the system under review can proceed into system fabrication, demonstration, and test; and can meet the stated performance requirements within cost (Program budget), schedule (Program schedule), risk, and other system constraints. A series of CDRs are normally held in the System Development & Demonstration phase for new developments. A CDR is held for each Cl and aggregation of Cls in the specification tree. A system CDR is held after completion of all Cl or aggregation of Cl CDRs. Even when the government elects not to bring the allocated baseline under configuration control by the time of this review, an assessment of the flowdown of
requirements from the functional baseline to the lowest-level Cl for each item in the specification tree should be included in the review. Any changes in the Performing Activity's draft allocated
configuration documentation since the PDR are reviewed by the Tasking Activity and their
impact on the functional baseline assessed and validated. This review assesses the system final design as captured in product specifications for each configuration item in the system (product baseline), and ensures each product in the product baseline has been captured in the detailed design documentation. Product specifications for hardware enable the fabrication of configuration items, and may include production drawings. Product specifications for software (e.g., Software Design Documents) enable coding of a Computer Software Configuration ltem captured in product specifications for each configuration item in the system (product baseline), and ensures each product in the product baseline has been captured in the detailed design documentation. Product specifications for hardware enable the fabrication of configuration items, and may include production drawings. Product specifications for software (e.g., Software Design Documents) enable coding of a Computer Software Configuration ltem. The CDR is conducted during the EMD Phase.
Flight Readiness Review (FRR) or lnitial Flight Release (lFR): The Flight Readiness Review (FRR) is a multi-disciplined product and process assessment to ensure the system under review can proceed into flight test with airworthiness standards met, objectives clearly stated, flight test data requirements clearly identified, and an acceptable risk management plan defined and approved. This review also ensures proper coordination has occurred between engineering and flight test and that all applicable disciplines understand and concur with the scope of effort that has been identified and how this effort will be executed to derive the data necessary to satisfy airworthiness and test and evaluation requirements. As such, this review will include appropriate level of detail for each configuration to be evaluated within the flight test effort. The FRR is conducted during the EMD Phase.
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