We offer two inspection options: First Article Inspection (FAI) combined with a Sampling Plan, or FAI alone. We recommend selecting the FAI + Sampling Plan option to consistently ensure high-quality parts.

A 100% dimensional First Article Inspection is performed on the initial part. Subsequent parts are inspected according to a sampling plan based on Acceptable Quality Level (AQL) with zero acceptance for defects. This sampling targets critical dimensions identified by our engineers, including tight tolerances, explicitly dimensioned features (outside general tolerance blocks), dimensions prone to deviations without careful attention, and any specifications explicitly marked as critical to quality.

Only the initial part produced undergoes a comprehensive, 100% dimensional inspection. Subsequent parts do not receive additional dimensional inspections.

AQL (Acceptable Quality Limit) defines the maximum allowable percentage of defective items in a batch. At ProtoXYZ, we adhere to AQL with C=0, meaning no defects are permitted, ensuring consistently high-quality parts. Lower AQL values require a larger sample size for inspection to verify that the percentage of in-tolerance parts meets the required standard.

Specify the total number of dimensions to be recorded during inspection. A 2D drawing with clearly marked critical dimensions is required if you need more than the basic measurements (length, width, and height) included in the inspection report. For any dimensions not designated as critical, ProtoXYZ's engineers will determine which features to inspect.