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ROI CalculatorFirst Article Inspection is a highly organized and systematic procedure to measure, test, and analyze a sample taken from an initial lot of products to ensure that the tooling, manufacturing, and documents comply fully with the engineering drawings and specifications set for the product design.
In sectors where high accuracy is a non-negotiable demand, such as aerospace machining, automotive sub-assembly manufacturing, defense industry fabrication, and medical device injection molding, the introduction of a novel part presents risks. Setup mistakes, improper machine programming, variations within raw materials, or even small tool alignment problems could produce disastrous dimensional deviations resulting in total loss of the entire manufacturing output. The FAI acts as the ultimate quality gate at the start of the entire manufacturing life cycle. It provides conclusive proof that the selected manufacturing process is reliable and can be reliably repeated for large-volume mass production.
The main purpose of an FAI is to prove the capability of the physical manufacturing process to reproduce the theoretical part design produced by the engineer during standard operations. Doing so ensures that there is no possibility of producing a large number of flawed components, thus safeguarding the company against material scrap losses and delays. Under tightly regulated global supply chains, performing an FAI according to set guidelines is absolutely mandatory for procurement. Aerospace industries follow this through the AS9102 specification, while the automotive and manufacturing industries consider this an essential element of the Production Part Approval Process (PPAP).
An accommodating First Article Inspection must go through a very detailed and systematic inspection execution process:
Ballooned Engineering Drawings: The quality engineer identifies all dimensions, tolerances called out, notes metrics, and surface finishes indicated in the blueprint, and assigns each one of these a unique identification number.
Full Dimensional Measurement Tracking: Physically measuring all the attributes of the parts inspected using calibration measurement tools like Coordinate Measuring Machines (CMMs), optical comparators, and highly precise micrometers.
Material and Functional Verification: Gathering and inspecting raw material documentation, independently tested chemical results, NDT reports, and heat treatment certification to prove metallurgical/chemical compliance.
The AS9102 Multi-Form Report: Completing the report in three mandatory forms: Form 1 (Part Number Identification), Form 2 (Product Identification for materials and special processes), and Form 3 (Characteristic Identification, matching the measurement to tolerances on all aspects).
A FAI report, which has been successfully evaluated, becomes a legally binding benchmark for the relationship that exists between the organization and the outside vendor or the contract manufacturer organizations (CMOs).
In case of any modification that is carried out later in the product’s lifecycle, such as when production is moved to another facility, a machine control system upgrade, changes in tooling configuration, or restarting after production shutdown, the organization must mandate FAI.
This kind of standardization of pre-production testing ensures the integrity of information, reduces downtime, speeds up international regulatory compliance, and completely shields the value stream from human and mechanical variation.
