ASD‑STE100 Standard Overview
Understanding Simplified Technical English: The international standard for clear, consistent, and accessible technical documentation across aerospace and industrial sectors.
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.
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 RulesFundamental 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 RulesGuidelines 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 RulesGuidelines 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 RulesRules 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 RulesModifier 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 RulesOrganization 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.