Useful links

Guide to Nadcap

Nadcap is the leading worldwide cooperative program of major companies designed to manage a cost-effective consensus approach to special processes & products and provide continual improvement within the aerospace & automotive industries.

Nadcap is a brand name for a global programme that is focused upon compliance to standards and continual improvement of special processes.

List of current Nadcap programmes is detailed below:

Special Processes

  • Nondestructive Testing (NDT)
  • Materials Testing (MTL)
  • Heat Treating (HT)
  • Coatings (CT)
  • Chemical Processing (CP)
  • Welding (WLD)
  • Nonconventional Machining & Surface Enhancement (NMSE)

Systems & Products

  • Sealants (SLT)
  • Distributors (DIST)
  • Aerospace Quality Systems (AQS) – AC7004
  • Fluid Distribution Standards (FLU)
  • Elastomer Seals (SEALS)
  • Composites (COMP)
  • Electronics (ETG)

Under Development

  • Fasteners (FAST)


Nadcap process flow chart

Performance Review Institute (PRI) contacts list

A list of contacts can be found on the PRI website. Click here

Nadcap Customer Support Initiative (NCSI)

NCSI is a free, web-based training program designed to walk suppliers through the Nadcap process. The training discusses everything from audit preparation to non-conformance responses, as well as the additional training tools provided by PRI. To be taken to the website click here.

Common Standards for Certification

SC21 objectives

The SC21 expectation is that all members will gain certification to AS/EN9100 (or applicable standard) and that this shall be flowed throughout the supply chain.

Customer Expectations

Certification to AS/EN9100 and Nadcap is increasingly becoming an international customer contractual requirement and is often used as a discriminator during supplier selection.

What is the AS/EN9100 Standard?

It specifies quality management system requirements for the aerospace & defence industry and is the model for quality in design, development, production, installation and servicing in the industry.

The highest quality and standards in production are of critical importance to the UK aerospace and defence supply chain. Certification and quality management audits have emerged as the methods of ensuring safety and reliability standards are met. A company supplying to more than one company could face numerous quality audits and checks to satisfy each customer, this results in unnecessary audit duplication. SC21 companies have agreed to cut the number of audits through the recognition of quality system certification based on international standards. UK supply chains that have achieved AS/EN 9100 and Nadcap approval for special processes where applicable, will not receive further quality system audits from customers who are part of SC21. Companies with AS/EN 9100 approval have experienced significantly reduced levels of auditing compared with those that have not achieved approval.

The AS/EN 9100 standard was originally developed as the recommended quality system standard for aerospace by the International Aerospace Quality Group (IAQG), and is fully supported by all the major aerospace prime manufacturers world wide. To achieve this standard a company needs to obtain independent approval from an accredited third party certification body. These organisations are covered by an industry oversight programme administered in the UK by the SBAC, with experienced quality audit professionals from UK industry undertaking the oversight audits. The UK scheme is in turn subject to oversight as part of an international process directed by the IAQG. Companies formally registered to AS/EN 9100 are entered onto an international database, identified as the Online Aerospace Supplier Information System (OASIS), with more than 1000+ UK aerospace sites already registered.

What is the Nadcap Standard?

Nadcap The internationally recognised Nadcap system of special process audits is the recommendation for special process assessment. A growing number of major primes are now requiring Nadcap approval(s), which is overseen by the Performance Research Institute (PRI), based in the US with an office in the UK, using experienced special process professionals. Processes covered by this approach include:Chemical Processing
Elastomer Seals
Fluid Distribution Systems
Heat Treatment
Materials Testing Laboratory
Non Destructive Testing
Nonconventional Machining and Surface Enhancement
WeldingWith other special processes being progressively added

Guide to AS/EN9100


As an important part of the SC21 programme, quality is a critical performance area. The promotion of common industry standards is an important objective to focus on, one standard being quality system certification to AS/EN9100.

The AS/EN9100 standard includes ISO9001:2001 quality management system requirements and specifies additional requirements for the aerospace industry.

ADS objectives

ADS’s expectation is that all SC21 members will gain certification to AS/EN9100 (or another industries equivalent standard) and that this shall be flowed throughout the supply chain.

Customer expectations

Certification to AS/EN9100 is increasingly becoming a customer contractual requirement which is often used as a discriminator during supplier selection.


  • Certification to AS/EN9100 (or equivalent) is recognised by customers
  • Companies certified to AS/EN9100 will be entered onto the OASIS (online aerospace supplier information system) database which advertises capability to prospective customers enabling future business opportunities
  • Enhanced sense of belonging to the fraternity of recognised quality suppliers

How to obtain certification to the AS9100 standard

  • Obtain a copy of the standard from SAE International
  • Undertake a quality management system ‘gap analysis’ between ISO9001 and AS/EN9100
  • Initiate discussion with a UKAS (United Kingdom Accreditation Service) accredited aerospace certification body who will provide guidance as to the process to be followed

Further information

Prior to implementation, consider transition training, between the standards, for key member personnel (details of training providers can be obtained via the internet by searching on AS/EN9100).

Approved AS/EN9100 providers

Below is a list of providers approved by ADS’s Certification Body Management Committee, to find out more simply click on the name to link directly to their respective website:

Approved AS/EN9100 training providers

ASCS ADS approved training organisations:

  • TEC Transnational Ltd
  • TPT Consultancy and Training

The links below provides further information on quality standards and systems: