The document outlines the Source Approval Request (SAR) submission process for national stock numbers (NSNs) within the Department of Defense. It specifies that SARs should be submitted electronically via the DoD SAFE file transmission site, particularly for NSNs with no open solicitations. Submissions via CDs by mail are no longer accepted. To initiate the process, request a SAR drop-off via email and provide essential details like the CAGE code and NSN. It also states that SARs may be deemed unprocessable if considered uneconomical due to low demand and encourages users to check the DLA Supplier Requirements Visibility Application for item demand forecasts. The review process can take over 180 days, followed by a formal notification of the decision. The document emphasizes a streamlined electronic submission system to enhance efficiency and reduce redundancy in processing SARs across different services managing the same items.

The "Aviation Source Approval and Management Handbook" outlines the processes, policies, and responsibilities for approving sources of critical aviation safety items (CSIs) within the U.S. Department of Defense and other federal agencies. It emphasizes the importance of ensuring that sources are capable of producing items that meet safety and quality standards, and encourages full and open competition in procurement, as mandated by the Competition in Contracting Act. The handbook details types of sources that can be considered for approval, the necessary documentation for Source Approval Requests (SAR), and responsibilities of the Integrated Materiel Manager (IMM) and Engineering Support Activity (ESA) throughout the approval process. Key components include requirements for technical reviews, quality assurance considerations, and the management of sources identified on control drawings. The handbook also highlights methods for approving new sources, including the acceptance of historical suppliers from prior sourcing arrangements, and guidelines for the use of surplus materials. Reverse engineering and reengineering processes are also covered, although reengineering is discouraged unless absolutely necessary. Overall, the handbook serves as a comprehensive resource for guiding federal procurement efforts focused on the safety and reliability of aviation materials and systems.