MIL-STD-1798 Mechanical Equipment And Subsystems Integrity ProgramThe purpose of this standard is to describe the general process to achieve and maintain the physical and functional integrity of the mechanical elements of aircraft systems. The goal of this integrity program is to achieve the desired level of safety and aircraft availability at the most economic cost across the life cycle of the weapon system. This standard allows the process to be tailored in a competitive environment to meet specific equipment, subsystem, and/or system requirements. The Mechanical Equipment and Subsystems Integrity Program MECSIP is implemented in the planning process and continued until retirement of the system.

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MIL-STD-1798C APPENDIX A

A.3   DEFINITIONS

A.3.1   Acronyms.

CDR          Critical Design Review

CI              Configuration Item

EMD          Engineering and Manufacturing Development Phase

FRR          Flight Readiness Review (equivalent to IFR) IFR            Initial Flight Release

MDD          Materiel Development Decision PCA          Physical Configuration Audit PDR          Preliminary Design Review PRR          Production Readiness Review

SDR          System Design Review (equivalent to SFR) SFR          System Functional Review

SRR          System Requirement Review

SVR          System Verification Review

A.3.2   Milestone definitions.

Milestone definitions for the program milestones listed in table A-I through table A-IV are provided below as defined by the legacy MIL-STD-1521:

System Requirement Review (SRR):  The SRR is a multi-functional technical review to ensure that all system and performance requirements derived from the Capability Development Document are defined and consistent with cost (Program budget), schedule (Program schedule), risk, and other system constraints. Generally this review assesses the system

requirements captured in the system specification. The review ensures consistency between the system requirements and the preferred system solution and available technologies. It ensures a balance has been struck between requirements and solution approach risk-that there has

been convergence on a system solution that has acceptable risk and that system requirements satisfy customer requirements. The assigned manager may convene an SRR prior to MDD or

during Technology Development; the Program Manager may convene an SRR during System

Development and Demonstration.

System Design Review (SDR) or System Functional Review (SFR):  The SFR is a multi- disciplined technical review to ensure the system under review can proceed into preliminary design, and that all system requirements and functional performance requirements derived from the Capability Development Document are defined and are consistent with cost (Program budget), schedule (Program schedule), risk, and other system constraints. Generally this review assesses the system functional requirements as captured in system specifications (functional baseline), and ensures all required system performance is fully decomposed and defined in the

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