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Depot Source of Repair (DSOR) Determination Process


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Depot Source of Repair (DSOR) Determination Process


Action performed for the major overhaul or complete rebuild of end items, and the repair of secondary items. Depot maintenance requires extensive industrial facilities, specialized tools and equipment, and uniquely experienced and trained personnel that are not available at other levels of maintenance.

Alternate Definition

Depot Source of Repair (DSOR) assignments support readiness, sustainment, and affordability objectives (including mobilization and surge capabilities) of national defense strategic and contingency requirements, pursuant to Section 2464 of Title 10, USC. The DSOR is an integral part of the overall weapon system supportability analysis, acquisition, and life cycle sustainment planning, including appropriate consideration for core logistics capabilities and sustaining workloads, in accordance with DoD Instruction (DoDI) 5000.02. The DSOR assessment process assists the Program Manager (PM) in selecting the best value in depot maintenance support. 

General Information

The Under Secretary of Defense for Acquisition & Sustainment (USD(A&S)) is responsible for DSOR across the Department of Defense (DoD), and jointly decides, with Military Departments, DSOR assignments. Formerly, DSOR was the responsibility of the USD for Acquisition, Technology, and Logistics (AT&L), but on February 1, 2018, that organization split into two new organizations, USD(A&S) and USD for Research and Engineering (R&E), with USD(A&S) accepting responsibility for the DSOR determination process.

The DSOR determination process applies to any program with an approved Joint Capabilities Integration and Development System (JCIDS) Capability Requirement Document when the program transitions to a Program of Record, as defined by DODI 5000.85.

DSORs can be initiated in two ways: as new programs begin, the PM will direct DSOR assessment, or a DoD Component may choose to review an existing DSOR assignment. The DSOR analysis is completed in accordance with DODD 4151.18 “Maintenance of Military Materiel,” and as directed in DODI 4151.24 “Depot Source of Repair (DSOR) Determination Process,” and results in a Program Manager (PM) Depot assignment based on the findings. At Milestone (MS) A or equivalent, the PM, with support from the lead Military Department, will determine the applicability of the requirement for core logistics capabilities at MS A and document the determination in the Core Logistics Analysis (CLA) Annex of the Life Cycle Sustainment Plan (LCSP). This determination will be employed in the DSOR determination process to identify candidate organic activities.

In the case of core logistics capability determination, pursuant to Section 2464 of Title 10, U.S.C., the DSOR facilitates establishing new organic depot-level maintenance capabilities through procurement funding.  Please reference the Depot Maintenance Statute - 10 USC 2464 ACQuipedia article for additional information on this process.

After receiving a DSOR decision, the PM will: (1) Document the decision and resulting DSOR assignment or assignments in the LCSP. (2) Finalize applicable personnel, facility, equipment, and technical data requirements. (3) Program and budget for these requirements in planning, programming, budgeting, and execution submittals and incorporate these submittals in the LCSP. (4) Initiate coordination with the appropriate Military Department to establish organic depot-level maintenance capability.

If the PM or lead Military Department determines an existing DSOR assignment should be modified, they will work together to recommend a workload shift. The DSOR determination process steps outlined in DODI 4151.24 will be followed, and the requirements of Section 2469 of Title 10, U.S.C. may also apply.

See the DSOR Process Flow Chart from page 11 of DoD Instruction 4151.24 Depot Source of Repair Determination (DSOR) Determination Process policy for additional information.

Also reference the Office of the Assistant Secretary of Defense for Sustainment (ODASD) page on Depot Maintenance