ASD‑STE100 Standard Overview

Understanding Simplified Technical English: The international standard for clear, consistent, and accessible technical documentation across aerospace and industrial sectors.

ASD-STE100 technical documentation standards

What is ASD‑STE100?

ASD‑STE100 is an international standard that defines a controlled language specification for technical documentation. It was developed to improve the clarity, consistency, and translation efficiency of technical documents in complex industries.

53
Writing Rules
6
Rule Categories
~900
Approved Words

Why Use Simplified Technical English?

Enhanced Clarity

Reduces ambiguity and misunderstanding in technical documentation by using simple, direct language structures.

Global Accessibility

Makes documentation more accessible to non-native English speakers and international teams.

Cost Reduction

Significantly reduces translation costs and time by using standardized vocabulary and structures.

Safety Improvement

Minimizes risk of misinterpretation in critical safety-related procedures and instructions.

Maintenance Efficiency

Streamlines maintenance procedures with clear, unambiguous instructions that reduce errors.

Regulatory Compliance

Meets international standards for technical documentation in aerospace and industrial sectors.

Standard Development Timeline

1980s - Origins

Developed by the aerospace industry to address communication challenges in international operations and maintenance documentation.

1986 - First Publication

Initial release as a guideline for creating clear, unambiguous technical documentation in the aerospace sector.

2000s - International Adoption

Expanded beyond aerospace to automotive, manufacturing, and other technical industries requiring precise documentation.

2017 - Issue 8

Major revision incorporating modern linguistic research and expanded rule set for comprehensive coverage.

2021 - Issue 9 (Current)

Latest version with refined rules, updated dictionary, and enhanced guidelines for digital documentation.

Rule Categories Overview

The 53 ASD‑STE100 rules are organized into six focused categories, each addressing specific aspects of technical writing:

📋

General Principles

12 Rules

Fundamental guidelines for clear and effective technical writing, including sentence length, structure, and word choice.

  • Keep sentences short (20 words or fewer)
  • Use simple sentence structure
  • Use approved words only
  • Maintain consistent terminology
📝

Nouns & Articles

8 Rules

Guidelines for proper noun usage, article placement, and maintaining clarity in subject identification.

  • Use singular nouns when possible
  • Use articles (a, an, the) correctly
  • Avoid noun clusters
  • Use specific rather than general nouns

Verbs

8 Rules

Guidelines for clear action words, including tense usage, voice preference, and modal verb applications.

  • Use active voice
  • Use imperative mood for instructions
  • Use correct verb tenses
  • Avoid complex verb forms
👤

Pronouns

7 Rules

Rules for inclusive language and clear pronoun usage that avoids ambiguity in technical contexts.

  • Use "you" for instructions
  • Avoid ambiguous pronoun references
  • Use specific nouns instead of pronouns when unclear
🎯

Adjectives & Adverbs

6 Rules

Modifier guidelines to ensure precise and unambiguous descriptions in technical documentation.

  • Use adjectives and adverbs carefully
  • Avoid vague qualifiers
  • Use specific measurements instead of approximations
🏗️

Structure

7 Rules

Organization principles for logical document flow, paragraph structure, and information hierarchy.

  • Use parallel structure
  • Organize information logically
  • Use lists appropriately
  • Maintain consistent formatting

Industries Using ASD‑STE100

Aerospace

Aircraft maintenance manuals, operational procedures, and safety documentation for commercial aviation.

Manufacturing

Equipment manuals, safety procedures, and operational documentation for industrial systems and processes.

Construction

Assembly instructions, quality procedures, and technical specifications for construction equipment and processes.

Automotive

Service manuals, repair procedures, and technical documentation for vehicle systems.

Medical Devices

User manuals, maintenance procedures, and safety instructions for medical equipment.

Engineering

Technical specifications, installation guides, and operational procedures for complex systems.

Implementation Benefits

Measurable Results

40% reduction in translation time and costs
60% fewer customer support queries
50% improvement in comprehension scores

User Experience

Faster onboarding for new technicians
Reduced errors in complex procedures
Higher satisfaction from international users

Global Impact

Used in 40+ countries worldwide
Standard requirement for many contracts
Regulatory compliance in multiple industries

Ready to Master ASD‑STE100?

Explore the complete rule set and start implementing Simplified Technical English in your documentation.

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