NASA Correspondence Management and Communications Standards and Style - NPR 1450.10D - Effective Date March 24, 2006

Sep 15, 2026

NASA Procedural Requirements NPR 1450.10D establishes mandatory procedures for managing and controlling communications between the Principals of the Office of the Administrator and other NASA offices. It sets guidance and standards for preparing internal and external correspondence in both paper and electronic formats, covering writing organization, tone, language usage, and formats for letters, memorandums, and multiple communication services. The requirements include quality control roles, timelines, signature packages, and rules for classified and foreign correspondence, with revalidation noted on June 21, 2021.

LanguageEnglish

CategoryLetters

FormatPDF

Pages136

Reading Time48 min

AccessFree to download

Change History

Preface

Purpose

Applicability

Authority

Applicable Documents and Forms

Measurement/Verification

Cancellation

Chapter 1. Managing and Controlling Mail and Communications

Communications to the Principals of the Office of the Administrator

Quality Control Liaison (QCL) and Correspondence Control Liaison (CCL) Designations

Action Office Mailboxes

High-Profile Responses

Due Dates

Extensions of Due Dates

Signature Packages and Concurrences

Correspondence to Officials-in-Charge and/or Center Directors

Chapter 2. NASA Writing Standards

Organized Writing

Spoken Style

Compact Writing

Tone

Write Positively

Write Short, Disciplined Sentences

Use Short Paragraphs

Use Personal Pronouns

Use Active Voice

Use Action Verbs

Use Plain Language Words

Acronyms

Computer/Internet Words: Usage and Style

Chapter 3. Letters (Formats)

Standard Business Letter

Concurrences

Assembly for Signature

Nonpersonalized Business Letter

Legal Letter

Multiple-Addressee Letters

Assembly for Signature for Multiple-Addressee Letters

Condolence Letters

Envelopes and Mailing

Chapter 4. Memorandums (Memos) (Formats)

Standard Memo

Concurrences

Assembly for Signature for Memos

Multiple-Addressee Memos

Memorandum for the Record

Envelopes and Mailing

Chapter 5. Information Communications

General

Chapter 6. Electronic Communications

General

Electronic Mail Communications

Facsimile (Fax)

Other Types of Communications Services

Chapter 7. Envelopes and Mailing

General

Envelopes

Address Information and Placement

Chapter 8. Classified Correspondence

General

Security Classification Reminders

Format and Marking for Originally Classified Documents

Transmission of Classified Correspondence

Appendix A. Administrator's Correspondence Preparation and Control

Appendix B. Acronyms

Appendix C. White House and Congressional Correspondence

Appendix D. Privacy Act Correspondence

Appendix E. Foreign Correspondence

Appendix F. Forms of Addresses

Appendix G. Compound Words

Appendix H. Capitalization of Frequently Used Words at NASA

Appendix I. NASA Stationary Specification Standards

Appendix J. References

| NODIS Library | Organization and Administration(1000s) | Search | NASA Procedural Requirements NPR 1450.10D Effective Date: March 24, 2006 Expiration Date: March 24, 2026 COMPLIANCE IS MANDATORY FOR NASA EMPLOYEES NASA Correspondence Management and Communications Standards and Style Revalidated (6/21/2021) Responsible Office: Office of the Chief of Staff Table of Contents Change History Preface P.1 Purpose P.2 Applicability P.3 Authority P.4 Applicable Documents and Forms P.5 Measurement/Verification P.6 Cancellation Chapter 1. Managing and Controlling Mail and Communications 1.1 Communications Addressed to the Principals ofthe Office of the Administrator 1.2 Quality Control Liaison (QCL) and Correspondence Control Liaison (CCL) Designations for NASA Headquarters 1.3 Action Office Mailboxes 1.4 High-Profile Responses (Administration Offices) 1.5 Due Dates 1.6 Extensions of Due Dates 1.7 Office of the Administrator Signature Packages 1.8 Concurrences for Office of the Administrator Signature Packages 1.9 Correspondence to Officials-in-Charge of Headquarters Offices and/or Center Directors NPR 1450. 10D--TOC This document does not bind the public, except as authorized by law or as incorporated into a contract. This document is uncontrolled when printed. Check the NASA Online Directives Information System (NODIS) Library to verify that this is the correct version before use: [https://nodis3.gsfc.nasa.gov](https://nodis3.gsfc.nasa.gov). Page 1 of 136 Chapter 2. NASA Writing Standards 2.1 Organized Writing 2.2 Spoken Style 2.3 Compact Writing 2.4 Tone 2.5 Write Positively 2.6 Write Short, Disciplined Sentences 2.7 Use Short Paragraphs 2.8 Use Personal Pronouns 2.9 Use Active Voice 2.10 Use Action Verbs 2.11 Use Plain Language Words 2.12 Acronyms 2.13 Computer/Internet Words: Usage and Style Chapter 3. Letters (Formats) 3.1 Standard Business Letter 3.2 Concurrences 3.3 Assembly for Signature for Standard Business Letter 3.4 Nonpersonalized Business Letter 3.5 Legal Letter 3.6 Multiple-Addressee Letters 3.7 Assembly for Signature for Multiple-Addressee Letters 3.8 Condolence Letters 3.9 Envelopes and Mailing Chapter 4. Memorandums (Memos) (Formats) 4.1 Standard Memo 4.2 Concurrences 4.3 Assembly for Signature for Memos 4.4 Multiple-Addressee Memos 4.5 Memorandum for the Record 4.6 Envelopes and Mailing Chapter 5. Information Communications 5.1 General NPR 1450. 10D--TOC This document does not bind the public, except as authorized by law or as incorporated into a contract. This document is uncontrolled when printed. Check the NASA Online Directives Information System (NODIS) Library to verify that this is the correct version before use: [https://nodis3.gsfc.nasa.gov](https://nodis3.gsfc.nasa.gov). Page 2 of 136 Chapter 6. Electronic Communications 6.1 General 6.2 Electronic Mail Communications 6.3 Facsimile (Fax) 6.4 Other Types of Communications Services Chapter 7. Envelopes and Mailing 7.1 General 7.2 Envelopes 7.3 Address Information and Placement Chapter 8. Classified Correspondence 8.1 General 8.2 Security Classification Reminders 8.3 Format and Marking Originally Classified Documents 8.4 Transmission of Classified Correspondence Appendix A. Administrator's Correspondence Preparation and Control Appendix B. Acronyms Appendix C. White House and Congressional Correspondence Appendix D. Privacy Act Correspondence Appendix E. Foreign Correspondence Appendix F. Forms of Addresses Appendix G. Compound Words Appendix H. Capitalization of Frequently Used Words at NASA Appendix I. NASA Stationary Specification Standards Appendix J. References NPR 1450. 10D--TOC This document does not bind the public, except as authorized by law or as incorporated into a contract. This document is uncontrolled when printed. Check the NASA Online Directives Information System (NODI

FAQs

How does NPR 1450.10D address sensitive or special correspondence?

It includes chapters and appendices addressing classified correspondence, security classification reminders and transmission, and provides guidance and supporting materials for privacy act and foreign correspondence.

Sep 15, 2026

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