ASD-STE100, Simplified Technical English for aerospace and defense
ASD Simplified Technical English (ASD-STE100), formerly known as AECMA Simplified English, is an international specification for writing aerospace and defense documentation. The use of this specification is mandatory for many commercial and military projects worldwide. S1000D and ATA iSpec 2200 require the use of ASD Simplified Technical English for any documentation in English.
English is the official language for technical documentation in the aerospace and defense industries. However, many end-users are easily confused by complex sentence structures and by the number of different meanings and synonyms of English words. This applies especially to the many end-users who are not native English speakers.
As a result of joint efforts of AECMA (European Association for Aerospace Industries) and AIA (Aerospace Industries Association of America), the first issue of a controlled language for the aerospace and defense industries was released in 1986, entitled:
AECMA Simplified Technical English, PSC-85-16598 "A Guide for the Preparation of Aircraft Maintenance Documentation in the International Aerospace Maintenance Language".
In 2004, AECMA merged with EDIG (European Defense Industries Group) and EUROSPACE (Association of the European Space Industry) to form ASD, the Aerospace and Defense Industries Association of Europe. As a result, AECMA Simplified English was renamed to ASD Simplified Technical English. It also became an official Specification: ASD-STE100. In 2007, ASD-STE100 received the European Community Trade Mark No. 004901195. Since its first release in 1986 several changes, issues and revisions were released up to the present Issue 5 (2010), entitled:
ASD SIMPLIFIED TECHNICAL ENGLISH, Specification ASD-STE100, European Community Trade Mark No. 004901195 "International specification for the preparation of maintenance documentation in a controlled language".
ASD Simplified Technical English is characterized by a defined grammar and syntax rules, and a limited vocabulary. Today the standard is maintained by ASD and AIA members, which include companies such as British Aerospace, Airbus, Aermacchi, The Boeing Company, Lockheed Martin, Rolls-Royce, EADS, Dassault and Saab Aerosystems.