FAR and DFARS › FAR Part 50

FAR Part 50: Extraordinary Contractual Actions and the Safety Act

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

FAR Part 50 covers extraordinary contractual actions under Public Law 85-804 and the SAFETY Act. It allows agencies to amend or modify contracts to facilitate national defense and provides liability protections for anti-terrorism technologies. Contractors should understand these procedures if they seek relief for losses or offer anti-terrorism technologies.

Key rules

  • Agencies may use Pub. L. 85-804 authority to enter into, amend, or modify contracts without regard to other laws when necessary to facilitate national defense. (50.101-1)
  • Contract adjustments may be made only when the action will facilitate national defense, and losses alone are not sufficient basis. (50.103-1, 50.102-3)
  • Contractors must submit a written request for adjustment to the contracting officer with specific details and justification. (50.103-3)
  • The approving authority must issue a Memorandum of Decision for each request, and contracts must include a citation of Pub. L. 85-804 and E.O. 10789. (50.103-6, 50.103-7)
  • Indemnification for unusually hazardous or nuclear risks requires a contractor request and approval, and the clause at 52.250-1 must be inserted in the contract. (50.104-3, 50.104-4)
  • The SAFETY Act encourages development of anti-terrorism technologies and provides liability protections for qualified technologies. (50.203)
  • Contracting officers may authorize offers contingent upon SAFETY Act designation or certification only under specific conditions, such as DHS issuing a pre-qualification designation notice. (50.205-3)
  • Solicitations must include specific provisions regarding SAFETY Act applicability, such as 52.250-2 or 52.250-3, based on DHS determinations. (50.206)

Who does what

Contracting officers
  • Investigate contractor requests for adjustment thoroughly and obtain necessary facts and evidence.
  • Sign and date a Memorandum of Decision when approving or denying a request.
  • Insert required contract clauses, such as 52.250-1 for indemnification or SAFETY Act provisions.
Contractors
  • Submit a written request for contract adjustment to the contracting officer with precise details and justification.
  • Provide supporting information and evidence as requested by the contracting officer.
  • For SAFETY Act protections, apply to DHS and provide necessary information.
Agencies
  • Maintain complete records of all actions taken under Subpart 50.1.
  • Delegate authority only to appropriate levels, with limitations on certain approvals.
  • Consult with DHS on SAFETY Act applicability and encourage offerors to seek protections.

In practice

  • If you are experiencing losses on a defense contract that threaten your ability to perform, you may request a contract adjustment under Pub. L. 85-804, but you must show that the adjustment will facilitate national defense.
  • For contracts involving anti-terrorism technologies, consider seeking SAFETY Act designation or certification to obtain liability protections, and be aware that solicitations may include provisions contingent on such protections.
  • When requesting indemnification for unusually hazardous or nuclear risks, submit a detailed request to the contracting officer and be prepared to provide insurance information.

Common pitfalls

  • Assuming that any loss under a contract justifies a contract adjustment; the regulation states that losses alone are not sufficient basis.
  • Failing to include the required citation of Pub. L. 85-804 and E.O. 10789 in contracts modified under these authorities.
  • Not consulting with DHS on questionable SAFETY Act applicability, which could lead to improper solicitation provisions.

Written by AI from this part's codified text (2026-10-04); cited sections are checked against the part. A guide, not legal advice: the regulation text, the solicitation and your contract rule.

Rule changes for FAR Part 50

Subparts and sections

Subpart 50.1: Extraordinary Contractual Actions

Subpart 50.2: Support Anti-terrorism by Fostering Effective Technologies Act of 2002

← Part 49: Termination of ContractsPart 51: Use of Government Sources by Contractors →

All FAR parts

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗.

FAR Part 50: Extraordinary Contractual Actions and the Safety Act · SpendQuery