# Defense Federal Acquisition Regulation Supplement: Reliability and Maintainability in Weapon System Design (DFARS Case 2019-D003)
> **Defense Federal Acquisition Regulations System** · Final rule. · Published 2019-10-31 · Effective 2019-10-31 · 84 FR 58332
## Document
- **Document number:** 2019-23812
- **Category:** dfars-acquisition
- **Sub-agency:** Defense Federal Acquisition Regulations System
- **Federal Register citation:** 84 FR 58332
- **CFR reference:** 48 CFR 207
- **Publication date:** 2019-10-31
- **Effective date:** 2019-10-31
- **DOD docket:** Docket DARS-2019-0026
## Abstract

DOD is issuing a final rule amending the Defense Federal Acquisition Regulation Supplement (DFARS) to implement a section of the National Defense Authorization Act for Fiscal Year 2018 that requires the use of reliability and maintainability sustainment factors in weapon system design.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/10/31/2019-23812/defense-federal-acquisition-regulation-supplement-reliability-and-maintainability-in-weapon-system)
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