First Article Inspection (FAI): Services, Process & How to Prepare

What is the First article inspection (FAI) and how to prepare for it?

A first article inspection (FAI) is an inspection process that verifies that a product meets all the engineering and design requirements specified in the blueprint. During a first article inspection, a trained inspector will go over the product with a fine-tooth comb and compare it with the blueprint to ensure that all specifications such as dimensions, tolerances, and materials are met.

After the first article inspection is complete, a first article inspector will provide a report detailing their findings. This report will be used to determine if the product is defect-free and 100% compliant.

In this article, we will take a closer look at the first article inspection process, why it is important for buyers and how to prepare for one.

FAI Specializations Explained: Types of First Article Inspection

First article inspection — also called first piece inspection — is not a single fixed procedure. Buyers and standards bodies use several FAI specializations depending on the industry and the level of verification required:

• Full FAI: every dimension, material, and process requirement on the engineering drawing is measured and recorded. Used for brand-new parts, new tooling, or a new supplier.
• Partial (delta) FAI: only the characteristics affected by a change — a revised tolerance, a new material lot, or a relocated production line — are re-verified, rather than the whole part.
• AS9102 first article inspection: the aerospace and defense standard that defines a formal three-form FAIR (First Article Inspection Report) package, mandatory for most flight-critical components.
• PPAP first article inspection: the automotive Production Part Approval Process, which bundles FAI dimensional results with process and material evidence before a part is approved for serial production.

Whichever specialization applies, the goal is identical: prove that the first production units — the "first piece" — match the blueprint before a full run begins. Tetra Inspection's first article inspection services cover full and partial FAI across consumer goods, electronics, and industrial parts, with a documented photo report in 24 hours.

How Do You Ensure FAI Quality Control in Manufacturing?

First article inspection (FAI) is an important step in the manufacturing process, ensuring that products are made to the correct specifications and meet customer requirements. FAI involves inspecting a sample of the first product manufactured in a batch to ensure that it meets all quality standards. If any defects are found, the entire batch may be rejected and may need to be reworked or scrapped. This can be costly and can impact production schedules, so it is important to implement a rigorous FAI process to minimize the risk of rejects.

There are several factors to consider when designing an FAI process, including the type of product being manufactured, the manufacturing process, and the customer requirements. Some common quality criteria that may be inspected include dimensions, tolerances, surface finish, material properties, and functionality.

In order to ensure accurate results, it is important to have a well-trained and experienced FAI team. The team should be familiar with the product specifications and the manufacturing process so they can accurately identify any defects. The FAI process should also be well-documented so that all stakeholders (including production staff, quality control personnel, and customers) are aware of the expectations and procedures. This will help ensure that any defects are identified and addressed quickly and effectively. Quality control is critical in manufacturing, and first article inspection is a key part of ensuring that products meet all quality standards. By implementing a rigorous FAI process, you can minimize the risk of rejects and ensure that your products meet or exceed customer expectations.

What is FAI material testing and why does it matter?

FAI Materials testing is a process of determining the properties of raw material and how it behaves under different conditions. The purpose of this testing is to ensure that the material can be used for the desired application. There are many different types of materials, and each has its own set of properties that must be tested. The most common type of material testing is mechanical testing.

This involves applying a force to the material and measuring the resulting deformation. This can tell you things like the strength and stiffness of the material. Other tests may be performed to determine other properties, such as resistance to corrosion or heat.

All materials must meet certain specifications before they can be used in an application. The type of material, as well as the environment in which it will be used, will dictate what those specifications are.

What Are the Key First Article Inspection Procedures?

The First Article Inspection Process (FAI) is the first step in validating a new manufacturing process or supplier. In addition to carefully examining the initial product for measurements, dimensions, and assembly correctness as per the blueprint, an inspector also makes sure all the manufacturing process is in order. If there are any issues found, they will need to be addressed before the supplier can proceed with the mass production of the product. This can help to avoid costly recalls, reworks, or any delays in getting the product to market.

There are many different ways to conduct an FAI Inspection, but the most important thing is to be thorough and cover all aspects of the manufacturing process. This includes looking at the raw materials, the equipment used, the assembly process, and the final product. Here are some tips on how to conduct an effective FAI:

Define the scope of the inspection:

The first step is to clearly define what will be included in the inspection. This should include a list of all materials, components, and processes that will be covered.

Create a checklist:

Creating a checklist of everything that needs to be inspected will help ensure that nothing is missed. This can be created by the quality assurance team or the supplier.

Inspect the raw materials:

The inspection should start with the raw materials used in the manufacturing process. This includes looking at the quality of the materials, as well as making sure that they meet all specifications.

Inspect the equipment:

The next step is to inspect all of the equipment that will be used in the manufacturing process. This includes both the machinery and any tools that will be used.

Inspect the assembly process:

The assembly process should be closely inspected to ensure that all parts are put together correctly. This includes both manual and automated processes.

Inspect the final product:

Once the product is assembled, it should be thoroughly inspected to make sure that it meets all specifications. This includes checking for any defects or problems.

Documenting results and making recommendations based on findings:

It's important to document the results of the inspection so that the findings can be reviewed. This documentation should include both positive and negative results. Based on the findings of the inspection, recommendations should be made to improve the manufacturing process. This can include changes to the materials, equipment, or assembly process.

How to find a reputable first article inspection services provider?

When you need to find a first article inspection services provider, you should look for a company that has a lot of experience in the industry. You should also make sure that the company is certified and has a good reputation. Here are 8 important factors you need to consider when choosing a reputable first article inspection service provider.

1. Look for a company with relevant experience:

The first thing you need to consider when choosing a first article inspection service provider is the amount of experience that the company has. You should look for a company that has been in business for a long time and has a lot of experience with the type of product you need to have inspected

2. Make sure the inspection service provider is certified:

When you are looking for a first article inspection service provider, you should make sure that the company is certified. This will ensure that the company has the proper qualifications to perform the inspection.

3. Check the company's reputation:

It is also important to check the reputation of the first article inspection service provider. You can do this by searching online for reviews of the company. This is something companies can't easily fake. It will give you a clear idea of whether or not the company is as good as they claim to be.

4. Make sure their service is affordable:

You also need to make sure that you can afford the first article inspection service provider. You should get quotes from several different companies so that you can compare prices. Also, specifically ask, if there are any hidden fees.

5.Ask for referrals:

If you can't rely on online reviews alone, make sure to ask someone for a referral who has used a first article inspection service provider before. This can help you find a reputable company.

6. Read the fine print:

Before you hire a first article inspection service provider, you should read all of the fine print. This will ensure that you understand all of the terms and conditions of the agreement.

7. Get everything in writing:

You should get everything in writing when you hire a first article inspection service provider. This will ensure that there is no misunderstanding about the agreement.

There are many benefits to choosing an experienced first article inspection service provider like Tetra Inspection. Our team has years of experience in performing First article inspections across Asia, Europe, and Africa. With our fast and reliable service, we can ensure that your first article will be inspected accurately and the inspection report will be available to you in 24 hours or less.

Contact us today to learn more about our first article inspection services!

With inspectors across Asia, including quality control in China, Tetra Inspection helps importers verify product quality at the source.

The Three AS9102 Forms, and What Goes on Each

Most disputes over a first article inspection come down to a report that was filled in loosely. AS9102 exists to stop that, and it works by splitting the record across three forms. If a customer asks for an AS9102 FAI, they are asking for all three.

• Form 1 — Part Number Accountability. Identifies the part, the drawing and its revision, and lists every sub-assembly and detail part it contains, each with its own FAI status. It also records whether the FAI is full or partial, and if partial, why.
• Form 2 — Product Accountability for materials, special processes and functional testing. Raw material certifications, every special process the part went through (heat treatment, plating, welding, non-destructive testing), the supplier that performed each one and the approval it holds, plus the results of any functional test the drawing calls for.
• Form 3 — Characteristic Accountability, Verification and Compatibility Evaluation. The one that takes the time. Every design characteristic on the drawing gets a unique number, then a row of its own: what the drawing requires, what was actually measured, and the tool or method used to measure it. Non-conformances are recorded here with their disposition, not left out.

Ballooning the drawing comes first

Form 3 depends on a ballooned drawing — a copy of the engineering drawing on which every dimension, tolerance, note, geometric callout and finish requirement is circled and numbered. Those numbers are what Form 3 rows refer to. Ballooning is where FAIs are won or lost: a characteristic nobody numbered is a characteristic nobody measured, and the omissions are almost always in the notes and the geometric tolerancing rather than in the obvious linear dimensions.

The part has to be a real production part

An FAI is only valid on a part made with production tooling, production processes and production personnel. A hand-finished sample from the toolroom proves the drawing can be met by a skilled operator with unlimited time. It proves nothing about the process that will run the order, which is the entire question the FAI is meant to answer.

When a new FAI is required

A first article inspection is not a one-off clearance. A new or partial FAI is triggered by a design or drawing revision, a change of manufacturing process, tooling or production location, a change of supplier or sub-tier supplier, a natural or man-made event that could affect the process, and a lapse in production — commonly taken as two years. A partial FAI re-verifies only the characteristics the change could have affected, which is why Form 1 asks you to state the reason.

PPAP is the automotive equivalent, not the same thing

Buyers in automotive supply chains ask for PPAP rather than AS9102. PPAP is a broader submission package of eighteen elements at five submission levels, covering the process flow diagram, PFMEA, control plan, measurement system analysis and initial process capability as well as dimensional results. The dimensional results element is roughly what Form 3 does. If a supplier offers you a PPAP when your customer specified AS9102, or the reverse, the documents are not interchangeable even though much of the underlying measurement is the same.

Frequently Asked Questions About First Article Inspection

When should a first article inspection be performed?

A First Article Inspection should be performed before full-scale production begins, typically on the first 1-5 units produced using production tooling, materials, and processes. It is also required when there are engineering changes, new tooling or equipment, a change in manufacturing location, or after a significant gap in production. The FAI verifies that the production setup can consistently produce parts meeting all specifications.

What is the difference between FAI and a regular product inspection?

A First Article Inspection is a comprehensive one-time verification that every dimension, material, and process requirement in the engineering drawing is met. A regular pre-shipment inspection uses AQL sampling to check a representative sample against key specifications. FAI is more thorough but performed on fewer units, while regular inspections are performed on every production lot.

What documents are required for a first article inspection?

A complete FAI package typically includes the First Article Inspection Report (FAIR) form, dimensional measurement results for every drawing dimension, material certifications and test reports, process documentation, and any special process approvals (e.g., heat treatment, plating). For aerospace and defense, AS9102 defines the specific documentation requirements.

What happens if a first article inspection fails?

If an FAI fails, production must not proceed until the root cause is identified and corrected. The supplier must implement corrective actions, document the changes, and submit new first articles for re-inspection. Common failure reasons include tooling wear, incorrect material grades, misinterpreted tolerances, and inadequate process controls. A failed FAI is actually a success — it catches problems before they affect an entire production run.