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48 CFR · Federal Acquisition Regulation and Defense supplement

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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.

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66 sections with “major systems”: the first 40

  • DFARS 207.106 Additional requirements for major systems.
    …prohibited by 10 U.S.C. 3208(d)(1) from requiring offers for development or production of major systems that would enable the Government to use technical data to competitively reprocure identical items or components of the system if the ite…
  • FAR 7.106 Additional requirements for major systems.
    (a) In planning for the solicitation of a major system (see part 34) development contract, planners shall consider requiring offerors to include, in their offers, proposals to incorporate in the design of a major system— (1) Items which ar…
  • FAR 52.227-21 Technical Data Declaration, Revision, and Withholding of Payment—Major Systems.
    …t the following clause: Technical Data Declaration, Revision, and Withholding of Payment—Major Systems (MAY 2014) (a) Scope of declaration. The Contractor shall provide, in accordance with 41 U.S.C. 2302(e)(7), the following declaration w…
  • FAR 27.406-3 Major system acquisition.
    …The clause at 52.227-21, Technical Data Declaration, Revision, and Withholding of Payment—Major Systems, implements 41 U.S.C. 2302(e). When using the clause at 52.227-21, the section of the contract specifying data delivery requirements (se…
  • DFARS 209.571-7 Systems engineering and technical assistance contracts.
    …all obtain advice on systems architecture and systems engineering matters with respect to major defense acquisition programs or pre-major defense acquisition programs from Federally Funded Research and Development Centers or other sources i…
  • DFARS 252.209-7008 Notice of Prohibition Relating to Organizational Conflict of Interest—Major Defense Acquisition Program.
    …llowing provision: Notice of Prohibition Relating to Organizational Conflict of Interest—Major Defense Acquisition Program (DEC 2010) (a) Definitions. “Major subcontractor” is defined in the clause at 252.209-7009, Organizational Conflict…
  • DFARS 252.209-7009 Organizational Conflict of Interest—Major Defense Acquisition Program.
    …rescribed in 209.571-8(b), use the following clause: Organizational Conflict of Interest—Major Defense Acquisition Program (MAY 2019) (a) Definition. As used in this clause— Major subcontractor means a subcontractor that is awarded a sub…
  • FAR 15.407-2 Make-or-buy programs.
    …nformation required from a contractor in a make-or-buy program shall be confined to those major items or work efforts that normally would require company management review of the make-or-buy decision because they are complex, costly, needed…
  • FAR 15.407-4 Should-cost review.
    …w examining the contractor's entire operation (including plant-wide overhead and selected major subcontractors) to a small-scale tailored review examining specific portions of a contractor's operation. (b) Program should-cost review. (1) A…
  • FAR 27.409 Solicitation provisions and contract clauses
    …the clause at 52.227-21, Technical Data Declaration, Revision, and Withholding of Payment—Major Systems, in contracts for major systems acquisitions or for support of major systems acquisitions. This requirement includes contracts for detai…
  • FAR 34.002 Policy.
    The policies of this part are designed to ensure that agencies acquire major systems in the most effective, economical, and timely manner. Agencies acquiring major systems shall— (a) Promote innovation and full and open competition as requ…
  • FAR 48.102 Policies.
    …ram requirement clause (52.248-1, Alternates I or II) in initial production contracts for major systems programs (see definition of major system in 34.001) and for contracts for major systems research and development except where the contra…
  • DFARS 212.270 Major weapon systems as commercial products.
    The DoD policy for acquiring major weapon systems as commercial products is in subpart 234.70.
  • FAR 2.101 Definitions.
    … (see 9.505-1(b)) to ensure the effective operation and maintenance of a weapon system or major system as defined in OMB Circular No. A-109 or to provide direct support of a weapon system that is essential to research, development, producti…
  • FAR 9.505-1 Providing systems engineering and technical direction.
    …r its production shall not— (1) Be awarded a contract to supply the system or any of its major components; or (2) Be a subcontractor or consultant to a supplier of the system or any of its major components. (b) Systems engineering includ…
  • DFARS 209.570-2 Policy.
    … 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 …
  • DFARS 209.571-1 Definitions.
    …ith system responsibility means a prime contractor for the development or production of a major system, if the prime contractor is not expected at the time of award to perform a substantial portion of the work on the system and the major su…
  • DFARS 209.571-6 Identification of organizational conflicts of interest.
    When evaluating organizational conflicts of interest for major defense acquisition programs or pre-major defense acquisition programs, contracting officers shall consider— (a) The ownership of business units performing systems engineering …
  • DFARS 209.571-8 Solicitation provision and contract clause.
    …on at 252.209-7008, Notice of Prohibition Relating to Organizational Conflict of Interest—Major Defense Acquisition Program, if the solicitation includes the clause at 252.209-7009, Organizational Conflict of Interest—Major Defense Acquisit…
  • DFARS 227.7103-1 Policy.
    …g to those items may be restricted. (e) As provided in 10 U.S.C. 3208, solicitations for major systems development contracts shall not require offerors to submit proposals that would permit the Government to acquire competitively items ide…
  • DFARS 234.7002 Policy.
    (a) Major weapon systems. (1) A DoD major weapon system may be treated as a commercial product, or acquired under procedures established for the acquisition of commercial products, only if— (i) The Secretary of Defense determines that— (A…
  • DFARS 252.215-7010 Requirements for Certified Cost or Pricing Data and Data Other Than Certified Cost or Pricing Data.
    … determination, and if available, a Government point of contact; (B) For subsystems of a major weapon system and components and spare parts of a major weapon system or subsystem of a major weapon system that have not previously been determ…
  • FAR 7.105 Contents of written acquisition plans.
    …urce(s), and discuss why full and open competition cannot be obtained. (ii) Identify the major components or subsystems. Discuss component breakout plans relative to these major components or subsystems. Describe how competition will be so…
  • FAR 34.000 Scope of part.
    This part describes acquisition policies and procedures for use in acquiring major systems consistent with OMB Circular No. A-109; and the use of an Earned Value Management System in acquisitions designated as major acquisitions consistent …
  • FAR 34.103 Testing and qualification.
    …trial resource is being or potentially may be used in the development or manufacture of a major system or item of supply; and (2) for major systems in production, remaining quantities to be acquired are sufficient to justify incurring the c…
  • FAR 39.103 Modular contracting.
    …e, agencies should, to the maximum extent practicable, use modular contracting to acquire major systems (see 2.101) of information technology. Agencies may also use modular contracting to acquire non-major systems of information technology.…
  • DFARS 212.209 Determination of price reasonableness.
    …t necessary to support such market research, the contracting officer— (1) In the case of major weapon systems, for subsystems of major weapon systems and components and spare parts of major weapon systems and of subsystems of major weapon …
  • DFARS 252.209-7007 Prohibited Financial Interests for Lead System Integrators.
    …ith system responsibility means a prime contractor for the development or production of a major system, if the prime contractor is not expected at the time of award to perform a substantial portion of the work on the system and the major su…
  • FAR 16.103 Negotiating contract type.
    … acquisition procedures; (ii) Contracts on a firm-fixed-price basis other than those for major systems or research and development; and (iii) Awards on the set-aside portion of sealed bid partial set-asides for small business.
  • FAR 16.306 Cost-plus-fixed-fee contracts.
    …ctical. (2) A cost-plus-fixed-fee contract normally should not be used in development of major systems (see part 34) once preliminary exploration, studies, and risk reduction have indicated a high degree of probability that the development…
  • FAR 16.402-2 Performance incentives.
    … the contractor. (c) Technical performance incentives may be particularly appropriate in major systems contracts, both in development (when performance objectives are known and the fabrication of prototypes for test and evaluation is requi…
  • FAR 34.003 Responsibilities.
    …implementation. (b) The agency procedures shall identify the key decision points of each major system acquisition and the agency official(s) for making those decisions. (c) Systems acquisitions normally designated as major are those progr…
  • FAR 34.005-6 Full production.
    Contracts for full production of successfully tested major systems selected from the full-scale development phase may be awarded if the agency head (a) reaffirms the mission need and program objectives and (b) grants approval to proceed wit…
  • FAR 34.104 Contract clause.
    …ustrial Resources Developed under Defense Production Act, Title III, in all contracts for major systems and items of supply.
  • FAR 35.000 Scope of part.
    …cation to research and development (R&D) contracting. (b) R&D integral to acquisition of major systems is covered in part 34. Independent research and development (IR&D) is covered at 31.205-18.
  • FAR 36.001 Definitions.
    …ans a project that includes the comprehensive replacement or restoration of virtually all major systems, interior finishes (such as ceilings, partitions, doors, and floor finishes), and building features.
  • FAR 52.219-8 Utilization of Small Business Concerns.
    …ntracts and subcontracts for subsystems, assemblies, components, and related services for major systems. It is further the policy of the United States that its prime contractors establish procedures to ensure the timely payment of amounts d…
  • DFARS 202.101 Definitions.
    …ice of the Secretary of Defense. (For emergency acquisition flexibilities, see 218.270.) Major defense acquisition program is defined in 10 U.S.C. 4201. Material weakness means a deficiency or combination of deficiencies in the internal c…
  • DFARS 212.102 Applicability.
    …r “commercial service” definition in FAR 2.101. See 234.7002(b) and (c) for subsystems of major weapon systems and components and spare parts of major weapon systems and of subsystems of major weapon systems; (B) Include the written determ…
  • DFARS 215.403-1 Prohibition on obtaining certified cost or pricing data (10 U.S.C. chapter 271 and 41 U.S.C. chapter 35).
    …ducts or commercial services, except see 234.7002(e) for pricing commercial subsystems of major weapon systems and components and spare parts of major weapon systems and of subsystems of major weapon systems. (B) When applying the commerci…

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.