October 3, 2026

NADCAP Explained: Accreditation for Aerospace Special Processes

By:
Dallas Bond

Nadcap accredits specific processes at a specific supplier site - not an entire company or its employees. Before awarding work, I check the exact facility, approved scope, and active dates in PRI’s Qualified Manufacturers List, plus any separate customer approvals.

Here’s how I approach the requirements:

  • Know what each approval covers. AS9100 addresses the quality system; Nadcap addresses process controls for work such as heat treating, chemical processing, welding, and NDT. Contract terms determine whether Nadcap is required.
  • Prepare with actual job records. I check procedures, personnel qualifications, equipment, and production records - not just finished parts. I plan the self-audit 90–120 days before the external audit and submit it at least 30 days before, following published guidance.
  • Fix the cause of audit findings. I review affected product, correct the failure, and provide records showing the fix works. Retraining alone may not resolve the problem.
  • Keep approval current. I track scope changes, outsourced work, customer rules, and reaccreditation dates, typically 12–24 months apart.

My rule: <u>verify approval before releasing work</u>. A scheduled audit is not accreditation, and past approval does not replace a current scope check.

Nadcap Accreditation: Preparation to Renewal

Nadcap Accreditation: Preparation to Renewal

Why NADCAP Matters: Ensuring Quality in Aerospace Manufacturing

How Nadcap Differs From AS9100

Nadcap focuses on process control, so it complements - not replaces - AS9100. AS9100 certifies an organization’s quality system. Nadcap verifies repeatable control of a specific special process at a specific site.[8][10]

Comparison AS9100 certification Nadcap accreditation
Scope Company quality system within the certified scope Specific process at a specific facility
Purpose Effective management controls Repeatable process control
Assessment basis AS9100 requirements under the IAQG scheme Process-specific Nadcap criteria and customer requirements
Typical evidence Risk records, supplier controls, internal audits, corrective actions, and management reviews Personnel qualifications, approved procedures, calibration, process records, and test results
Customer use Baseline quality-system qualification or contractual requirement Qualification for designated processes

Contract language usually triggers the requirement, not simply working with aerospace customers.

When Customers Require Nadcap

Purchase orders, contractual quality clauses, supplier-approval rules, and engineering or process specifications can require Nadcap. They can also extend that requirement to sub-tier processors.

Airbus’s supplier policy requires relevant suppliers to gain and maintain applicable accreditations and cascade requirements to sub-tiers.[11]

Before accepting work, smaller suppliers should confirm the required process, facility, scope limitations, and separate customer approvals. They should also check whether outsourced processing is allowed and when accreditation must be active: at order acceptance, production, or shipment.

A scheduled audit does not mean the contract requirement is met. Get written customer agreement before committing to work that depends on future accreditation.

Check Supplier Approval Before Awarding Work

Before releasing work, confirm that the supplier’s approval covers the exact site and process. Procurement and quality teams should:

  • Verify the supplier’s current AS9100 certificate and applicable IAQG certification information.[8]
  • Check the Nadcap accreditation record for the exact production site, approved scope, effective dates, and limitations. Approval for the corporate parent or another branch isn’t enough.
  • Match the scope to the work package’s material, specification, equipment, and sub-process requirements.
  • Verify any required customer listing, source inspection, or approved-subcontractor designation.
  • Recheck status before awarding work and before major schedule changes.

Confirm all customer-specific approvals before release.[9]

How to Prepare for a Nadcap Audit

Assign preparation tasks by function so each team knows what it needs to prove. Quality owns evidence and deadlines. Production checks operator practices, maintenance verifies equipment, and engineering confirms specifications and parameters. Start with scope, then use job-level records to show special-process control.

Confirm Scope and Audit Requirements

Define the site, processes, equipment, materials, revisions, personnel, and outsourced steps covered by the audit. Confirm whether it’s an initial, reaccreditation, or added-scope audit.

Check requirements against the current PRI audit criteria in the electronic system, not a downloaded checklist. For an initial audit, verify that the accepted quality-management-system certificate stays valid through the audit’s last day.[7]

With scope set, build the audit file around actual production jobs.

Gather Process-Control Records

Arrange records so the auditor can follow a production job from its requirements to final disposition. Link instructions to qualifications, calibration, maintenance, personnel training, process parameters, test results, traceability, and nonconformances. Use the revision that was in effect when the job ran.[7]

Include records for the processes in scope:

  • Heat treating: Pyrometry, temperature-uniformity surveys, and load charts.
  • Chemical processing: Chemical-bath analysis and replenishment records.
  • Welding: Procedures, qualifications, and consumable traceability.
  • NDT: Procedures, technician certifications, equipment checks, and reports.

The governing criteria and customer requirements determine which records you need.[7] Use them to test process control before the auditor does.

Run a Self-Audit Using Production Jobs

Schedule the self-audit 90–120 days before the external audit to allow time to close gaps. Use the current checklist, match evidence to each requirement, and justify every “not applicable” answer.

Trace recent jobs from order to final record. Compare what operators do on the shop floor with what the procedure requires. Give each gap an owner and due date, and contain any product risks. Submit the self-audit at least 30 days before the audit, per published guidance.[5][12]

The Nadcap Audit and Corrective Actions

After the self-audit, PRI manages the external audit and nonconformance report (NCR) cycle to verify process control for supplier qualification. PRI schedules the audit, assigns the auditor, and manages responses in its system.[3][6][14]

Before the visit, confirm contacts, task-group rules, and due dates. Assign each NCR response to both quality and the process owner, and confirm its response deadline and approval path.[3][6][5]

What Auditors Check

Auditors trace actual production - not just written procedures. They review observations, personnel qualifications, equipment controls, and job records. Missing evidence or a mismatch with requirements results in an NCR.[3][14][15][16][20]

Document Corrective Actions and Results

An NCR response must fix the control failure, not just the record. Cover containment, immediate correction, root cause, affected-product review, and steps to prevent recurrence. Identify affected jobs by date, equipment, batch, and job number. Document disposition and customer notice when required, and attach evidence showing that the fix was put in place and worked.[5][14][17][20]

A PRI staff engineer reviews each response and its supporting evidence and may ask for clarification or more records. After that review, the task group makes the final acceptance and accreditation decision. Closing NCRs is required to gain or maintain accreditation.[3][6][17][18]

Common Gaps in Finding Responses

Avoid responses that simply repeat the finding, blame the operator, rely only on retraining, or leave out shipped product. Before submission, have quality, engineering, operations, and the process owner check each response for completeness.

Include approved changes, evidence that those changes are being used, and later production records showing that they work. A training attendance sheet proves attendance - not that the failure has stopped recurring.[9][14][17][19][20] Strong responses help close NCRs faster and reduce repeat findings.

How to Maintain Nadcap Accreditation

After closing NCRs, keep the controls that passed the audit in place. Maintaining Nadcap means proving that your processes stay under control between audits.[2][6]

Keep Qualifications Current and Control Changes

PRI typically uses a 12–24 month reaccreditation interval. Confirm your schedule and expiration date in PRI’s current supplier systems and procedures.[6] Track expiration dates, keep personnel and equipment qualified, review process changes before release, and check that earlier corrective actions still work.

Maintain an up-to-date scope matrix covering approved processes, sites, equipment, specifications, and customer approvals. Before production starts, review equipment moves, process changes, facility transfers, and new customer requirements. Determine whether each change requires qualification, notification, or approval.

For outsourced work, verify the processor’s exact scope and customer approval where required. Pass along the applicable specification and retain evidence of the processing performed.[22][4]

Check Records for Process Control

Trace representative jobs through their records. Check specification revisions, material lots, equipment, operator qualifications, recorded parameters, inspection results, and final disposition.

Confirm that qualifications were valid when the work took place, earlier corrective actions still work, and active production falls within the accredited scope. Keep the records that prove process control.[13][21]

Use Current Requirements for Compliance Decisions

Check current PRI guidance, Nadcap criteria, procedures, customer specifications, and aerospace standards, including their revision and effective dates. Resolve conflicts in writing rather than relying on how past audits handled them.

Verify the facility, process scope, and active accreditation in PRI’s Qualified Manufacturers List, along with any required customer approvals.[14][2][10] Use these current documents before releasing work or approving suppliers.

FAQs

How long does initial Nadcap accreditation take?

The provided sources do not give a standard timeline for initial Nadcap accreditation. They cover Nadcap’s importance in aerospace quality roles and the need to notify hiring managers about scheduled reaccreditation, but neither explains how long initial accreditation takes [1][2].

What costs should I budget for Nadcap accreditation?

Budget for personnel costs and direct accreditation fees. The provided search results don’t list accreditation fees, but quality managers at facilities that require Nadcap accreditation often earn $150,000 to $200,000 in base salary, plus bonuses. That’s more than quality managers earn at facilities without these specialized registrations.

The higher pay reflects the expertise needed to manage Nadcap audits and maintain compliance.

What happens to in-process work if accreditation expires?

The search results don’t explain what happens to work already in progress if Nadcap accreditation expires.

Related Blog Posts

Keywords:
NADCAP, aerospace accreditation, special processes, Nadcap audit, NCR response, supplier approval, process control, accreditation renewal
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