AS9100 (revision B, the latest version, was issued in June 2005) is based on ISO 9001: 2000, but includes additions and clarifications that underscore the aerospace industry's concern with safety, reliability and maintenance. AS9100 outlines industry-specific expectations based on best practices, some of which are codified in standards issued by SAE and its global counterparts and referenced in AS9100.
The Americas Aerospace Quality Group (AAQG) and the International Aerospace Quality Group (IAQG) developed AS9100 and several related aerospace standards in a global effort to harmonize industry requirements. Beyond writing the standards, the members of AAQG and IAQG are involved in oversight of certifications and approvals related to these industry standards.