FAR and DFARS › DFARS Part 209: Contractor Qualifications › Subpart 209.5
DFARS 209.570-2 Policy.
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
In plain English
This section states that an entity performing lead system integrator functions on a major DoD system generally cannot have a direct financial interest in developing or constructing any individual system or element of a system of systems. It also restricts when DoD may award new lead system integrator contracts, including a prohibition on awarding such contracts to entities that were not already performing those functions before January 28, 2008.
Applies to: Entities performing or seeking lead system integrator functions in DoD major system acquisitions
Key terms: lead system integrator · major system · system of systems · direct financial interest · low-rate initial production
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
(a) Except as provided in paragraph (b) of this section, 10 U.S.C. 4292 prohibits any entity performing lead system integrator functions in the acquisition of a major system by DoD from having any direct financial interest in the development or construction of any individual system or element of any system of systems.
(b) The prohibition in paragraph (a) of this subsection does not apply if—
(1) The Secretary of Defense certifies to the Committees on Armed Services of the Senate and the House of Representatives that—
(i) The entity was selected by DoD as a contractor to develop or construct the system or element concerned through the use of competitive procedures; and
(ii) DoD took appropriate steps to prevent any organizational conflict of interest in the selection process; or
(2) The entity was selected by a subcontractor to serve as a lower-tier subcontractor, through a process over which the entity exercised no control.
(c) In accordance with section 802 of the National Defense Authorization Act for Fiscal Year 2008 (Pub. L. 110-181; 10 U.S.C. 4292 note), DoD may award a new contract for lead system integrator functions in the acquisition of a major system only if—
(1) The major system has not yet proceeded beyond low-rate initial production; or
(2) The Secretary of Defense determines in writing that it would not be practicable to carry out the acquisition without continuing to use a contractor to perform lead system integrator functions and that doing so is in the best interest of DoD. The authority to make this determination may not be delegated below the level of the Under Secretary of Defense for Acquisition and Sustainment. Also, see 209.570-3(b).
(d) Effective October 1, 2010, DoD is prohibited from awarding a new contract for lead system integrator functions in the acquisition of a major system to any entity that was not performing lead system integrator functions in the acquisition of the major system prior to January 28, 2008.
← 209.570-1 Definitions. · 209.570-3 Procedures. →
Rule changes for DFARS Part 209
- Defense Federal Acquisition Regulation Supplement: Certification Requirement for Military Recruitment Advertising (DFARS Case 2024-D022) ↗ · proposed 2026-06-25 · comments due 2026-08-24
- Defense Federal Acquisition Regulation Supplement: Limitation on Certain Institutes of Higher Education (DFARS Case 2024-D023) ↗ · final rule 2025-08-25 · effective 2025-08-25
- Defense Federal Acquisition Regulation Supplement: Preventing Conflicts of Interest for Certain Consulting Services (DFARS Case 2024-D007) ↗ · final rule 2025-08-25 · effective 2025-10-24
- Defense Federal Acquisition Regulation Supplement: Inflation Adjustment of Acquisition-Related Thresholds (DFARS Case 2024-D002) ↗ · final rule 2025-08-25 · effective 2025-10-01
- Defense Federal Acquisition Regulation Supplement: Inflation Adjustment of Acquisition-Related Thresholds (DFARS Case 2024-D002) ↗ · proposed 2025-01-17 · comments due 2025-03-18
- Defense Federal Acquisition Regulation Supplement: Preventing Conflicts of Interest for Certain Consulting Services (DFARS Case 2024-D007) ↗ · proposed 2024-09-26 · comments due 2024-11-25
- Defense Federal Acquisition Regulation Supplement: Limitation on Certain Institutes of Higher Education (DFARS Case 2024-D023) ↗ · proposed 2024-08-15 · comments due 2024-10-15
- Defense Federal Acquisition Regulation Supplement; Technical Amendments ↗ · final rule 2024-07-29 · effective 2024-07-29
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.