AS9100

AS9100: The Aerospace Quality Management Standard

AS9100 is the internationally recognised quality management system (QMS) standard developed specifically for the aerospace, space and defence industries. Published by the Society of Automotive Engineers (SAE International) and harmonised with ISO 9001, AS9100 adds approximately 115 aerospace-specific requirements beyond the base ISO 9001 framework. The current revision, AS9100 Rev D (released in September 2016), aligns with ISO 9001:2015 and governs over 19,000 certified organisations across more than 100 countries worldwide.

Key Requirements and Structure

AS9100 Rev D follows the ISO High-Level Structure (HLS) with 10 clauses, supplemented by aerospace-specific additions in areas such as operational risk management, configuration management, product safety, counterfeit parts prevention and first article inspection (FAI). Clause 8.1.1 mandates operational risk management throughout the product realisation process, requiring organisations to assign risk levels using quantitative scales (typically 1-5 severity and 1-5 probability matrices yielding risk priority numbers from 1 to 25). Clause 8.4 strengthens supplier controls, requiring organisations to maintain approved supplier lists, conduct on-site audits of critical suppliers at least every 12 months and flow down all applicable requirements through the supply chain.

Configuration management under Clause 8.1.2 requires organisations to maintain design baselines, track all engineering changes through formal change control boards and ensure 100% traceability from raw material certificates to final delivery documentation. First article inspection per AS9102 requires documented verification of 100% of design characteristics on the initial production unit, with re-inspection triggered by any change to tooling, manufacturing location, materials or processes exceeding a 12-month production gap.

Certification Process and OASIS Database

Certification audits are conducted exclusively by certification bodies (CBs) accredited under the International Aerospace Quality Group (IAQG) scheme. The audit process spans Stage 1 (documentation review, typically 2-3 days) and Stage 2 (implementation audit, typically 4-8 days depending on organisation size). All certificates are registered in the Online Aerospace Supplier Information System (OASIS), a global database containing records for over 19,000 certified sites. Recertification occurs on a 3-year cycle with annual surveillance audits. Non-conformances are graded as Major (requiring corrective action within 60 days) or Minor (requiring corrective action within 90 days).

UK Regulatory Context

Within the United Kingdom, aerospace manufacturers must comply with AS9100 alongside Civil Aviation Authority (CAA) requirements under CAP 748 (Aircraft Maintenance Organisation Approval) and the UK Air Navigation Order 2016. The Ministry of Defence (MOD) references AS9100 in Defence Standard 05-57 for defence procurement quality requirements. As of 2024, over 1,800 UK organisations hold AS9100 certification, concentrated in regions including the West Midlands, Bristol, Lancashire and Derby where major aerospace OEMs such as Rolls-Royce, Airbus UK and BAE Systems maintain operations.

The UK Aerospace Technology Institute (ATI) reported that the UK aerospace sector generated revenue of 37.3 billion GBP in 2023, with quality-related cost of poor quality (COPQ) estimated at 3-5% of revenue across the supply chain, equating to 1.1-1.9 billion GBP annually. Effective AS9100 implementation typically reduces COPQ by 25-40% within the first 3 years of certification.

Practical Examples

Example 1: A precision machining company in Sheffield producing turbine blade components implemented AS9100 Rev D and reduced customer-reported non-conformances from 47 per quarter to 8 per quarter within 18 months, achieving a 83% improvement in delivered quality while cutting scrap rates from 6.2% to 1.8%.

Example 2: A composites manufacturer in Bristol integrated AS9100 with NADCAP special process accreditation for heat treatment and non-destructive testing. The dual-standard approach enabled qualification as a Tier 2 supplier to Airbus, increasing annual contract value from 2.4 million GBP to 7.1 million GBP over 24 months.

Example 3: An electronics assembly firm in Scotland used AS9100 Clause 8.5.3 (counterfeit parts prevention) to establish incoming inspection protocols with X-ray fluorescence (XRF) testing and decapsulation analysis, preventing 12 counterfeit component lots valued at 340,000 GBP from entering production during a single financial year.

Integration with Other Standards

AS9100 integrates effectively with NADCAP for special process accreditation, ISO 27001 for information security (critical for defence contracts requiring Cyber Essentials Plus) and ISO 14001 for environmental management. The IAQG also publishes AS9110 (maintenance organisations) and AS9120 (stockist/distributor organisations) as sector-specific derivatives.

How Q-Hub Supports AS9100 Compliance

Managing AS9100 documentation, supplier approvals, non-conformance reports and audit schedules across complex aerospace supply chains demands robust digital infrastructure. Q-Hub provides a centralised quality management platform that automates document control workflows, tracks corrective actions through to verified closure and maintains audit-ready records. The document management module enforces revision control with electronic signatures, while integrated audit management tools schedule surveillance audits, capture findings and monitor CAPA completion rates against the 60-day and 90-day closure deadlines required by IAQG certification bodies.