First Article Inspection (FAI)
Quick facts
| Category | Formal process validation for new or changed production |
|---|---|
| Used by | Aerospace and defense, automotive, medical devices, electronics, precision machining, molded plastics |
| Also called | FAI |
| Related standards | AS9102, IATF 16949 (PPAP), ISO 13485 |
| Related processes | Gage R&R, measurement system analysis, PO inspections, ECR/ECN |
| Semantic match | First Article Inspection, FAI, AS9102, production process validation |
What is First Article Inspection (FAI)?
FAI formally confirms that a manufacturing process, whether newly established or recently modified, can consistently produce parts that conform to engineering drawings and contract requirements before full production volume begins.
The inspection typically examines the first part produced by the new process, or a representative sample from the first batch, checking dimensional characteristics using calibrated tools such as coordinate measuring machines, along with material properties and functional or visual characteristics as applicable.
In aerospace and defense, FAI is commonly governed by AS9102, which requires three specific forms: Form 1 for part number accountability, Form 2 for raw material and special-process certifications, and Form 3 for characteristic accountability and dimensional verification tied to a bubble-numbered drawing.
Why is First Article Inspection (FAI) important?
FAI catches process problems before they affect an entire production run, verifying the process itself rather than relying solely on periodic inspection of individual parts later in production.
Because FAI pauses production for review, it creates a clear decision gate: passing results allow production to proceed, while failures trigger root cause investigation, corrective action and re-inspection before manufacturing continues.
FAI also creates objective, documented evidence and clear accountability, supporting both internal quality assurance and customer confidence that a new or changed process was properly validated before volume production began.
How does First Article Inspection (FAI) work?
A typical FAI process includes:
- Trigger identification. Recognize when FAI is required, such as a new part, a process change, or a lapse in production.
- Reference gathering. Collect drawings, bills of materials, specifications and purchase order quality clauses.
- Inspection execution. Measure dimensional, material, functional and visual characteristics of the representative part.
- Documentation. Complete required forms, such as AS9102's Form 1, 2 and 3 in aerospace applications.
- Review and disposition. Approve the FAI if results pass, or trigger root cause and corrective action if they fail.
- Re-inspection. Repeat FAI after corrective action if the initial inspection did not pass.
First Article Inspection (FAI) vs. PPAP
| Comparison | FAI (AS9102) | PPAP |
|---|---|---|
| Industry | Aerospace and defense | Automotive |
| Documentation | Three forms (Form 1, 2, 3) | Up to 18 elements |
Real-world examples of First Article Inspection (FAI)
An aerospace supplier completes an AS9102 FAI package for a new production part, submitting Form 1, 2 and 3 documentation tied to a bubble-numbered drawing before beginning full production.
A defense contractor re-runs a partial FAI after a part lapses more than two years between production runs, consistent with AS9102's provisions for lapsed parts.
A precision machining shop identifies a dimensional nonconformance during FAI, triggering a root cause investigation and process adjustment before re-inspecting and gaining approval to proceed.
Regulations and standards related to First Article Inspection (FAI)
AS9102 Rev C is the SAE and IAQG-published standard governing FAI for aerospace and defense production parts, requiring the three-form submission tied to a ballooned engineering drawing.
FAI differs from automotive PPAP, which can include up to 18 elements such as DFMEA, PFMEA, control plans and measurement system analysis; AS9102 is comparatively leaner in form count but each form is more rigorously specified. Medical device, electronics and precision machining industries also commonly use FAI, often tailored to their own specific documentation requirements.
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How QT9 helps with First Article Inspection (FAI)
QT9 QMS FAI capabilities
- Automate First Article Inspection workflows, generating inspection plans quickly.
- Validate results in real time with integrated 2D/3D data.
- Reduce quality escapes through structured, repeatable FAI processes.
- Link FAI records to nonconforming products and corrective actions.
- Maintain electronic records of FAI history for every part.
- Support electronic signature approvals for FAI disposition decisions.
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Common mistakes with First Article Inspection (FAI)
Common mistakes include confusing FAI requirements with automotive PPAP expectations, requesting elements like DFMEA or control plans that AS9102 does not typically require.
Other problems include failing to re-run FAI when a part has lapsed in production for an extended period, missing changes in tooling, materials or processes that may have occurred during the gap.
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