Glossary Group Manufacturing

MSA – Measurement System Analysis

A structured evaluation of the accuracy, precision, repeatability, and reproducibility of measurement systems. Advanced MSA goes beyond basic Gauge R&R to include bias, linearity, and stability—essential where tolerances are tight and inspection data drives acceptance decisions. See also AS9100 and…

ARMAdmin
31st January 2026

SPC – Statistical Process Control

A method of monitoring and controlling processes using statistical techniques (such as control charts) to ensure they remain stable, capable, and predictable over time. In aerospace, SPC is critical for early detection of process drift before nonconforming product is produced.…

ARMAdmin
31st January 2026

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