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### ASD-STE100

Simplified Technical English
European Union Trade Mark No. 017966390

## Standard for technical documentation

### ISSUE 9, JANUARY 2025

Aerospace, Security and Defence Industries Association of Europe Rue du Trône 100, 1050 Brussels, Belgium
info@asd-europe.org
www.asd-europe.org
© ASD, 2025 – All rights reserved

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ASD-STE100 Simplified Technical English

## Copyright notices

## Copyright

The information in this document is the property of the Aerospace, Security and Defence Industries
Association of Europe (ASD). Transmittal, receipt, or possession of the information does not
express license or imply any rights to use, sell, or manufacture from this information and no
reproduction or publication of it, in whole or in part, shall be made without the written authority of
an officer of ASD.
The copyright for this document, in whole or in part, is fully owned by:
Aerospace, Security and Defence Industries Association of Europe (ASD)
Rue du Trône 100, 1050 Brussels, Belgium
www.asd-europe.org

### © ASD, 2005, 2007, 2010, 2013, 2017, 2021, 2025

(previously AECMA, 1986, 1987, 1988, 1989, 1995, 1998, 2001, 2004)
ASD-STE100 Simplified Technical English is a European Union (EU) registered trademark owned
by ASD

### ® ASD, 2006 (004901195), 2018 (017966390)

Special usage rights
Irrevocable permission to use, reproduce or publish this document or any subsequent modification
or revision thereof, in whole or in part, free of charge, is hereby given to these organizations and
institutions:
1. National Associations who are members of ASD, and all their member companies
2. Members of Aerospace Industries Association of America (AIA) and Canada (AIAC)
3. Members of International Coordinating Council of Aerospace Industries Associations
  (ICCAIA) not included in categories 1 thru 2
4. Customers of companies included in categories 1 thru 3
5. Ministries of Defense of the member countries of ASD, AIA, and AIAC
6. Airlines for America (A4A), formerly known as Air Transport Association of America (ATA)
7. Airworthiness Authorities
8. Universities and research institutes for educational purposes.
  Disclaimer of liability
  The purpose of this document, including its writing rules, dictionary entries, and all their related
  examples, is solely to offer recommendations and definitions intended to assist in technical
  communication. This document is not intended to create legal obligations or confer legal rights. No
  part of this document should be interpreted as having legal significance or implications, regardless
  of the context in which it is used.

## Issue 9

2025-01-15

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ASD-STE100 Simplified Technical English

## Highlights

This issue 9 of ASD-STE100 Simplified Technical English (STE) fully replaces all other issues and
revisions.
Changes
The table that follows includes all changes in this issue 9.
Subject Change
General changes
Page status All pages changed to Issue 9.
Page date All pages have the latest issue date (2025-01-15).
Typing, various editing These are corrected, where known.
and formatting errors
General STE terminology mostly aligns with ISO standards on terminology work
(refer to the general introduction, reference documents).
Help (light bulb symbol) added to some rules in part 1 where applicable.
All texts in part 1 comply as much as possible with STE.
Preliminary pages and general introduction
Title page Positions for title and subtitle in the page changed.
Subtitle changed to read:
“Standard for technical documentation”

## Issue date changed.

Date for ASD copyright changed.

## Copyright notices Name of ASD changed.

Date for ASD copyright changed.
Reference to EU trademark added.
Special usage rights revised.
Disclaimer of liability revised.

## Highlights New text to show the changes included in this issue.

## Table of contents Some terms changed.

Subject-to-rule index Revised to align it with the contents of this issue 9.
General introduction Text revised or changed where applicable.
Change form revised.
List of reference documents added.

## Issue 9 Highlights Page HI-1

2025-01-15

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ASD-STE100 Simplified Technical English

## Part 1 – Writing rules

## Section 1 – Words

## Rule 1.1 Wording for rule revised.

Explanatory text revised to include the definitions of technical nouns
(noun terms) and technical verbs (verb terms).
The term “technical noun” fully replaces the previous term “technical
name” in all parts of the document.
Help added.

## Rule 1.2 Wording for rule revised.

Explanatory text revised or changed where necessary.
Help added.

## Rule 1.3 Explanatory texts changed or added where necessary.

Texts and sequence of the examples revised or changed.

## Rule 1.4 Explanatory text revised or changed where necessary.

Summary tables (verbs and adjectives) revised.

## Rule 1.5 Wording for rule revised.

Explanatory text revised or changed where necessary.
Category 21, Law and regulations, added.
Category 22, Animals, plants, and other life forms, added.
Category titles fully revised.
Short explanatory text added for each category.
New examples of technical nouns added in the applicable categories.
Help added in category 17, Colors, to replace the previous note.
Help added at the end of the rule.

## Rule 1.6 Wording for rule revised.

Explanatory text revised or changed where necessary.
New explanatory text and related example added at the end.

## Rule 1.7 Wording for rule revised.

Explanatory text revised or changed where necessary.

## Rule 1.8 Wording for rule revised.

Explanatory text revised or changed where necessary.

## Rule 1.9 Wording for rule revised.

Explanatory text revised or changed where necessary.

## Rule 1.10 Wording for rule revised.

Explanatory text revised or changed where necessary.
New examples added.
Page HI-2 Highlights Issue 9
2025-01-15
