• OSMA Releases Significant NPR 8705.4A Updates

    NASA’s Office of Safety and Mission Assurance (OSMA) made significant updates to NPR 8705.4A, Risk Classification for NASA Payloads, effective April 29. 2021. OSMA updated the policy to reflect changes in risk acceptance and Technical Authority concurrence policies, to formalize and shorten the timeline for the risk classification process, to provide clearer and earlier documentation of the Safety and Mission Assurance (SMA) implementation approach, and (most importantly) better align stakeholder and implementer expectations. 

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  • Help NASA With Its Digital Transformation Strategy

    NASA’s Safety and Mission Assurance Reliability and Maintainability team is progressing with its Digital Transformation strategy to create solutions that enable seamless data flow and collaboration across centers. Integrating digital technologies will streamline engineering processes and data acquisition, share data among missions and centers seamlessly, leverage tools and technology across the agency, and ensure mission success through knowledge and influence.

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  • Help NASA Harness Digital Technology

    In tune with the agency’s initiative to create solutions that enable seamless data flow and collaboration across centers, NASA is hosting its first virtual Digital Transformation Hackathon, Sept. 11.

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  • Government and Industry Perspective on MBMA Align

    When it comes to Reliability and Maintainability (R&M), the public and private sectors’ objectives appear to be aligned. The 2020 theme for the annual R&M Symposium (RAMS) —  a conference focused on the latest technical practices and procedures presented through technical papers and tutorials — was, “R&M in a Model-Based Systems Engineering Environment.”

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  • SMA Discusses Future of MBMA

    The Office of Safety and Mission Assurance Model-Based Mission Assurance (MBMA) Program has been driving the effort to fully embrace MBMA at NASA. Led by the MBMA Program, a group of Safety and Mission Assurance professionals from across the agency is building the framework to make this effort a reality.

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James Joyner

James Joyner

R&M Technical Discipline Team Lead

Learn more about Reliability and Maintainability (R&M) Technical Fellow James Joyner

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Nancy Lewis

Nancy Lindsey

R&M Technical Fellow

Learn more about Reliability and Maintainability (R&M) Technical Fellow Nancy Lindsey

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Anthony DiVenti

Anthony DiVenti

R&M Technical Fellow

Learn more about Reliability and Maintainability (R&M) Technical Fellow Anthony DiVenti

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Points of Contact

Points of Contact

For details on contacting a R&M Point of Contact (PoC) for your location, click below

Find Your PoC

“The [Technical Discipline Team] TDT is a technical resource that will support the Office of Safety and Mission Assurance (OSMA), NASA Safety Center (NSC), and the NASA Centers in matters pertaining to R&M engineering and related activities.”

Technical Discipline Team Charter

Objectives Hierarchy

The Office of Safety and Mission Assurance (OSMA) has introduced a new objectives-based approach to better support NASA’s increasingly complex missions in a changing design environment. By focusing on objectives, OSMA hopes that the new standards will be more flexible, agile and cost-effective, and will allow more ingenuity to achieve objectives. It will serve as a guide to help programs and projects plan how they will meet their objectives, instead of dictating what they must do to via prescriptive requirements. Read the article, "OSMA Introduces New Objectives-Based Strategies," to learn more about objective hierarchies.

View Hierarchy   View NASA-STD-8729.1A 


Launch SATERN 

SATERN Courses

Course Title Course Number Buttons
Applications of Experiment Design and Analysis in Reliability Engineering SMA-RM-EXTI-461 SMA-RM-EXTI-461 Details
Data Collection and Analysis I SMA-RM-WBT-321 SMA-RM-WBT-321 Details
Data Collection and Analysis II SMA-RM-WBT-421 SMA-RM-WBT-421 Details
Design for Maintainability SMA-RM-WBT-231 SMA-RM-WBT-231 Details
Design for Reliability SMA-RM-EXTW-221 SMA-RM-EXTW-221 Details
Human Reliability Analysis SMA-RM-WBT-481 SMA-RM-WBT-481 Details
Maintainability and Supportability Analysis and Integration SMA-RM-WBT-351 SMA-RM-WBT-351 Details
N: Basics of Reliability and Maintainability SMA-RM-WBT-100 SMA-RM-WBT-100 Details
Parts and Materials Assessment (EEE, Mechanical, Parts Stress/Derating) SMA-RM-WBT-411 SMA-RM-WBT-411 Details
Physics of Failure SMA-RM-WBT-451 SMA-RM-WBT-451 Details
R&M Principles and Planning SMA-RM-EXTW-211 SMA-RM-EXTW-211 Details
R&M Testing and Demonstration I SMA-RM-WBT-341 SMA-RM-WBT-341 Details
R&M Testing and Demonstration II SMA-RM-WBT-441 SMA-RM-WBT-441 Details
Reliability Growth SMA-RM-EXTI-471 SMA-RM-EXTI-471 Details
Reliability, Availability and Maintainability Modeling I SMA-RM-WBT-331 SMA-RM-WBT-331 Details
Reliability, Availability and Maintainability Modeling II SMA-RM-WBT-431 SMA-RM-WBT-431 Details
Reliability, Availability, and Maintainability (RAM) Planning for Programs and Projects SMA-RM-WBT-241 SMA-RM-WBT-241 Details
Probabilistic Risk Assessment (PRA): Analytical Process for Recognizing Design and Operational Risk SMA-RM-WBT-251 SMA-RM-WBT-251 Details
Introduction to Model-Based Mission Assurance SMA-HQ-WBT-105 SMA-HQ-WBT-105 Details

Policy and Guidance


Policy Title Buttons  Buttons
NASA-HDBK-1002 Fault Management Handbook In Progress

NPR 8705.2 Human-Rating Requirements for Space Systems NPR 8705.2 Details See NPR 8705.2
NPD 8720.1 NASA Reliability and Maintainability (R&M) Program Policy NPD 8720.1 Details See NPD 8720.1
NASA-STD-8729.1A NASA Reliability and Maintainability (R&M) Standard for Spaceflight and Support Systems (R&M Objectives Hierarchy) NASA-STD-8729.1A Details See NASA-STD-8729.1A
TBD NASA-STD-8729.1 Guidebook
In Progress

Physics of Failure Handbook
NASA/SP-20230004376 Details See NASA/SP-20230004376
Planning, Developing, and Managing an Effective Reliability and Maintainability (R&M) Program  NASA-STD-8729.1 Details See NASA-STD-8729.1
Tri-Agency Reliability Engineering Guidance: Post Mission Disposal and Extension Assessment
NASA/SP-20210024973 Details See NASA/SP-20210024973


Title Publication Author  
Model Based Mission Assurance in a Model Based Systems Engineering (MBSE) Framework NASA Steven L. Cornford and Martin S. Feather See Paper
Research Challenges in Modeling and Simulation for Engineering Complex Systems
National Training and Simulation Association
National Training and Simulation Association
See Paper


Digital Transformation

Digital Transformation

The Digital Transformation Working Group is exploring ways to harness new technologies to change the way NASA builds spacecraft. The group is assessing the state of digital transformation at NASA and formulating a strategy to leverage evolving digital technologies and transform activities, processes, competencies, capabilities and products to advance agency missions.


Data Sharing

Enterprise Data Sharing Framework

The NASA Enterprise Data Sharing Framework activity will create a set of requirements, required resources, necessary endorsements/commitments to support and share data, necessary interfaces, and potential solution paths for obtaining quantitative and qualitative risk and Reliability data from mission flight records in support of NASA statistical and probabilistic analysis.
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The Maintenance and Maintainability Improvement Initiative (MAMII) is intended to strengthen the agency’s guidance, tools and collaborations as it relates to both maintenance and maintainability of on-ground and space flight systems. MAMII seeks to learn from past experiences, as well as create new guidance, address rapid growth and introduce advanced digital technologies (e.g., Artificial Intelligence, autonomous systems) into space flight missions.
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Post Mission


Post Mission Disposal (PMD) is a major component in debris mitigation. Orbital debris poses a risk to continued reliable use of space-based services and operations and to the safety of people and property in space and on Earth. Orbital debris mitigation measures have been developed to reduce the growth of the debris population. The key PMD element for Low-Earth Orbit satellites is the 25-year rule.

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The SmallSat Reliability Initiative (SSRI) seeks to define implementable and broadly accepted approaches to achieve Reliability and acceptable risk postures associated with several SmallSat mission risk classes. SSRI is collaborating with the Small Satellite System Virtual Institute (S3VI) to define needed SmallSat best practices and design/development guidelines without implementing government-heavy regulations that could stifle innovation steered by the industry.Learn More



Program Description Buttons
NESC The NASA Engineering and Safety Center’s (NESC) mission is to perform value-added independent testing, analysis and assessments of NASA's high-risk projects to ensure safety and mission success View NESC Site
IEST Test and Reliability Institute The Institute of Environmental Sciences and Technology (IEST) teaches methods for design, test, evaluation and Reliability. View IEST Site
University of Maryland Information about the University of Maryland Reliability engineering degree program View University of Maryland Site
University of Arizona Information about the University of Arizona Quality and Reliability engineering program View University of Arizona Site
Vanderbilt University Information about the Vanderbilt University Risk, Reliability and resilience program View Vanderbilt University Site
The Ohio State University Information about The Ohio State University Reliability engineering certification View The Ohio State University Site
Clemson University Information about the Clemson University Reliability engineering excellence program View Clemson University Site
The University of Tennessee Information about The University of Tennessee Reliability and Maintainability engineering graduate certificate — mechanical, aerospace and biomedical engineering concentration View The University of Tennessee Site
University of California, Los Angeles Information about the University of California, Los Angeles Risk Analysis and Reliability engineering program View University of California Site

Reference herein to any specific commercial products, processes or services by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement or recommendation by the United States government. This is by no means an exhaustive list, but it gives an indication of the many training programs available.