S1000D is an international specification for the procurement and production of technical publications. It is an XML specification for preparing, managing, and publishing technical information for a product. It was initially developed by the AeroSpace and Defence Industries Association of Europe (ASD) for use with military aircraft. Since Issue the scope has been extended to include land, sea and even non-equipment products. It is widely used in civil as well as military products. S1000D is part of the S-Series of ILS specifications.

S1000D is maintained by the S1000D Steering Committee, which includes board members from ASD, the United States’ Aerospace Industries Association (AIA), and the Air Transport Association (ATA), along with national industry and defence representatives from most of the countries currently using the specification.

The specification is free to download and use, although it is recommended that advice be sought on the best methods for implementing an S1000D project. S1000D is not a one-size-fits-all solution – it is a many-sizes-fit-many solution; through a combination of business rules, selectable elements and customizable values the standard is tailored to meet the project requirements.