ASD Simplified Technical English

In aviation, it is important to correctly understand maintenance and operation documentation to make sure that systems operate safely and correctly and to protect human lives. The Association of European Airlines (AEA) asked the European Association of Aerospace Industries (AECMA, now ASD to investigate the readability of maintenance documentation in the civil aviation industry and find a solution to simplify the language used to write such documentation.

The product of this effort was the AECMA Simplified English Guide (first release in 1986) which, in 2005, became the ASD Simplified Technical English Specification, ASD-STE100. Today, the success of STE is such that other industries use it for:

  • The original intended purpose of aerospace maintenance documentation
  • Language services
  • Professional translation and interpreting
  • Academic purposes

ASD-STE100® is an in EU registered trademark owned by ASD – AeroSpace, and Defence Industries Association of Europe (ASD-Europe;

ASD-STE100 is jointly produced by the following organizations, their members, and customers:

  • ASD – AeroSpace and Defence Industries Association of Europe (ASD-Europe;
  • AIA – Aerospace Industries Association of America (AIA-US;


Significance for HICO: Since its foundation in 1997, HICO has been developing efficient solutions in the context of technical communication. S1000D is an internationally recognized specification for the creation, management and publication of Structured Interactive Electronic Technical Documentation (IETD). With the HICO TEDD™-portfolio, HICO is the market-leading international provider of S1000D solutions. The HICO AMaX™-portfolio extends this portfolio for comprehensive after-market solutions and a full range of IETP-applications for the use of Interactive Electronic Technical Publications (IETP’s).