Technical insight
First Article Inspection for Machined Parts: What Should the PO Define?
First-article inspection can be a contractual release gate, but it is not a universal substitute for receiving inspection or ongoing process control. This guide helps buyers state the governing requirement, part/configuration, evidence package, approval owner and change triggers before an order starts.
By Geetai Precision
- Published
- Updated
Defining a first-article release package
A first-article request should answer a practical question: what evidence must be accepted before the buyer releases repeat or production work? The phrase alone does not tell a supplier which drawing revision, characteristics, tests, process conditions, approval authority or disposition route the purchase requires.
SAE describes AS9102 as an aerospace standard that establishes documentation requirements for First Article Inspection (FAI). The standard is a defined contractual framework, not proof that every machined part or every industry automatically requires an AS9102 report. [1]
If a customer cites AS9102, identify the exact revision and applicable flow-down rather than writing only “provide FAI.” The SAE revisions panel identifies AS9102C with a 2023 verification date; check the controlled contract and applicable standard revision at procurement time.
A NASA JPL supplier clause provides one contract-specific example: it calls for inspection records identifying required characteristics, stated limits and actual measured dimensions, and describes first articles made on production equipment using processes intended for production runs. These are JPL procurement terms, not universal requirements for every supplier or buyer. [2]
Put the decision fields on the purchase package
| Order field | Define before release | Why it matters |
|---|---|---|
| Applicability | Whether FAI is required; governing customer clause or standard and revision | Separates a contractual requirement from a supplier's optional proposal |
| Configuration | Part number, drawing/model revision, material/condition and assembly or pump configuration | Makes the evidence refer to the controlled item being purchased |
| Coverage | Which characteristics, notes, tests and linked records are in scope | Avoids assuming a dimensional report alone covers every requirement |
| Release authority | Who reviews, accepts, rejects or requests clarification, and how the disposition is recorded | Prevents an unsigned submission from being mistaken for release |
| Change triggers | Which drawing, process, tooling, source or quality changes require a new submission under the contract | Keeps later changes tied to the agreed control plan |
State whether the order requires a complete report, a partial or delta submission, a sample or first-piece check, and which purchase-order or customer forms apply. Do not use those labels as interchangeable shorthand: define the requested coverage and acceptance decision in the order documents.
Name the approval role, not only the inbox. A buyer may route the package, while design, supplier quality or the customer quality authority may own technical acceptance. Record whether the supplier may continue with other work while the first article is under review; the answer depends on the contract and risk decision.
Make the evidence traceable to the actual build
Ask the supplier to tie the submission to a part number, serial or lot, drawing revision and defined build. Where the contract requires process evidence, name the records that demonstrate the agreed production condition rather than assuming the words “first article” automatically provide them.
A useful submission index can list each controlled characteristic, requirement reference, measured or tested evidence, record identifier and any exception. The buyer can then see what was covered, what was not applicable, and what needs an authorized disposition before release.
For complex assemblies, decide whether the first article is a component, a completed assembly or both. Identify which interfaces, purchased items and manufacturing operations are included in the contract scope. Avoid implying that one inspected sample proves future lots will remain conforming without the separately agreed production controls.
Disposition and record control
Define in advance how missing evidence, rejected submissions and requested deviations are handled. Name who communicates an issue, who may approve a disposition, and which controlled record documents closure.
Keep design approval, first-article acceptance and purchase-order delivery acceptance distinct. A customer-approved deviation may change a requirement for a defined scope, while an FAI report documents evidence against a specified baseline. The purchase package should identify which record changes the baseline and who is authorized to approve it.
A short pre-order checklist
- State whether first-article inspection is mandatory and name the controlling clause or standard revision.
- Tie the package to the part/configuration and released drawing/model revision.
- Define characteristic, test and process-record coverage, including permitted exclusions.
- Name the review authority, acceptance record and disposition route for gaps or nonconformances.
- List the change conditions that trigger renewed evidence under the applicable contract.
For a replacement-parts inquiry, provide the released drawing, configuration identifiers and any customer first-article clause before requesting a quote. Ask the supplier to list assumptions and evidence that can be offered, then align those items with the authorized customer approval path before production release.
Frequently asked questions
Does every custom-machined part require an AS9102 first article?
No. SAE describes AS9102 as an aerospace FAI documentation standard. Whether it applies depends on the contract, customer flow-down and applicable revision; custom machining alone does not establish that requirement.
Is first-article inspection the same as a first-piece inspection?
Not automatically. The purchase package should state the required standard or clause, coverage, records and approval decision rather than relying on a label whose meaning may vary by contract.
Can production continue while the first-article package is under review?
That is a release-control decision for the buyer and applicable quality authority. State it in the order or quality plan; do not assume submission alone authorizes continued production.
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References
- AS9102 Aerospace First Article Inspection Requirement — SAE International. Accessed 2026-10-11T01:15:10.000Z.
- QC20e: Supplier First Article Inspection — NASA Jet Propulsion Laboratory. Accessed 2026-10-11T01:15:10.000Z.