(1) Direct observation of the article without the use of intrusive instrumentation. Applicable IFF the characteristic specified is both quantifiable and externally observable. This sense is applied only as part of “line QA“, through mandatory features found on the article’s identifying drawing.
(2) When used in the context of Qualification, direct observation of the identifying drawing and its subordinates1. Ancillary drawings do not contribute that process, except where distributed CI’s (e.g., make-on-assembly) use an index drawing to collect their identifying drawings for ease in reference.
Contrast with analysis, test, and demonstration.
Footnotes- IMHO, this is an incorrect interpretation: this is actually a form of analysis. It is, however, an unfortunately common usage of the term.[↩]