What a First Article Inspection Report Should Include

A first article inspection report confirms that a precision machined part has been manufactured and inspected against the approved engineering definition. It provides objective evidence that the supplier understands the drawing, material requirements, special processes, inspection methods and acceptance criteria before production quantities are released.

For Australian manufacturers and buyers, the report is especially valuable when parts move through long supply chains between Melbourne, Sydney, Brisbane, Adelaide and regional production centres. It gives engineering, quality and procurement teams a common record, whether the component is destined for mining equipment in the Pilbara, defence programs in South Australia or a medical device manufacturer in New South Wales.

Purpose and traceability

The report should begin with clear identification of the part and the inspection event. Include the part number, revision level, part name, drawing number, drawing revision, purchase order, manufacturing site, inspection date and the identity of the customer. If the part is made at more than one facility, the report should identify the actual site that performed the machining and inspection.

Traceability must extend to the specific batch or lot being inspected. Record the serial number or unique identification number, quantity inspected, manufacturing date and the machine or work order used where relevant. A first article should be representative of the process intended for ongoing production, rather than a specially hand-finished sample that does not reflect normal conditions.

The report should also identify the responsible personnel and approval status. Names, signatures or electronic approvals from the supplier’s quality representative and the customer’s authorised reviewer help establish accountability. For aerospace work, AS9102 forms are commonly used; other industries may use a customer-specific template aligned with ISO 9001 procedures.

Drawing and characteristic identification

A reliable report links every relevant drawing requirement to a unique characteristic number. The supplier typically balloons the drawing or creates a numbered characteristic list covering dimensions, tolerances, geometric controls, surface texture, notes, material specifications and key product characteristics. The ballooned drawing should be included in the final package and match the drawing revision cited in the report.

Each characteristic needs a corresponding inspection result. A measured value should be reported for variable data, such as 24.987 mm against a 25.000 ± 0.020 mm requirement. For visual or verification-based requirements, the report can state an appropriate result such as pass, accepted or verified, provided the inspection method and evidence are clear.

The characteristic list should not omit general notes or requirements that appear outside the main dimensioned views. These may include deburring, edge breaks, thread standards, marking, cleanliness, packaging, prohibited substances or restrictions on repair. Australian customers often work in metric units, but imported drawings can include inch dimensions, so the report must state the units and avoid unapproved conversions or rounding.

Materials, processes and supplier evidence

Material identification is a central part of the inspection record. Include the material grade, condition or temper, heat or cast number, supplier, certificate number and relevant mechanical or chemical requirements. A copy of the material certificate should be traceable to the part or batch. For stainless steel, aluminium, titanium and engineering plastics, the report should make the grade and applicable specification unambiguous.

The package should also document manufacturing processes that influence conformity. Examples include heat treatment, anodising, passivation, plating, shot peening, welding, laser marking and cleaning. Record the process specification, processor, certificate number, batch reference and acceptance status. If a subcontractor performed the operation, that external provider should be identified rather than hidden within a general statement of compliance.

Calibration evidence matters as well. Measuring equipment used for the inspection should be within its calibration period and traceable to recognised national or international standards. In Australia, customers may expect certificates from laboratories accredited by NATA, particularly for testing that affects defence, aerospace, energy or regulated products. The report does not need to reproduce every calibration certificate, but it should provide equipment identification and make supporting records available.

Dimensional and geometric inspection results

The core of the report is the measured evidence for size and geometry. Record actual results rather than simply stating that the part conforms. This includes diameters, lengths, thicknesses, hole locations, thread dimensions, counterbores, tapers and critical fits. Where a requirement has an upper and lower limit, show the result alongside those limits so the reviewer can assess the margin directly.

Geometric dimensioning and tolerancing controls require suitable inspection methods. Position, concentricity, perpendicularity, parallelism, profile and runout may be checked using a coordinate measuring machine, optical system, height gauge, roundness equipment or another validated method. State the equipment or method used, especially when a characteristic is difficult to verify with conventional gauges.

Surface finish and form should receive specific attention. A roughness result should identify the parameter, such as Ra, the measured value and the instrument used. Flatness, cylindricity and roundness results should identify the evaluated feature and method. For complex components, attach CMM reports, inspection plots or capability evidence when those records are needed to interpret the result.

Inspection planning should reflect the risk of the part. Critical-to-function features, safety-related dimensions and interfaces with mating components deserve defined measurement methods and appropriate resolution. A digital report is useful only when it preserves the link between the characteristic number, the actual result, the equipment and the person who accepted it.

Special processes and functional tests

Some requirements cannot be demonstrated through dimensional measurement alone. Functional checks may include gauge testing, thread verification, pressure testing, leak testing, torque testing, assembly trials or electrical continuity. The report should state the test requirement, test conditions, acceptance limits, equipment and result. If a test sample rather than every part was evaluated, identify the sampling basis.

Threads are a frequent source of incomplete evidence in machined components. A report should identify the thread standard, size, class or tolerance, gauge type and result. For precision assemblies, include evidence for mating features and any required fit verification. A declaration that a thread was checked is weaker than a record showing the correct GO and NO-GO gauges were used.

Visual and workmanship requirements also need defined criteria. Record checks for burrs, sharp edges, tool marks, dents, discoloration, contamination and damage from handling. If the drawing calls for marking or traceability, show the marking content, location and permanence. Photographs can support the report, especially for complex profiles or cosmetic surfaces, but they should supplement rather than replace objective inspection data.

Review, nonconformance and approval

A complete first article package should disclose any deviation, concession or nonconformance. If a result falls outside the drawing requirement, identify the characteristic, actual condition, nonconformance reference and disposition. Accepted deviations should be supported by written customer approval; they should never be concealed by changing an inspection result or silently using a newer drawing revision.

The review should confirm that the part was made using the intended production route. If the supplier changed tooling, material, machining strategy, subcontractor, location or inspection method during the build, the report should explain the change and determine whether a partial or repeat first article is required. This is important for Australian supply chains, where a component may move from a local prototype shop to a larger contract manufacturer in Melbourne or Sydney.

Final approval should show who reviewed the report and whether the article is accepted, conditionally accepted or rejected. Supporting documents may include the ballooned drawing, material certificates, special-process certificates, calibration records, CMM files, test results, photographs and approved deviations. A controlled document index prevents missing evidence and makes later audits faster.

A strong first article inspection report is more than a compliance form. It is a technical record connecting the drawing to the material, the manufacturing process, the measurement system and the finished part. The reader should remember that every significant requirement needs traceable evidence, every exception needs visible approval, and every result must relate to the exact revision and batch being accepted.