Identification and Specification Control for Special Processes
Published .
Related
- AS9100
- AMS2759
- Nadcap
Topics
- special-processes
- heat-treatment
- fai
- process-validation
- as9102-form-2
During manufacturing planning and First Article Inspection (FAI) compilation, questions arose regarding the classification of operations such as thermal stress relief and protective fluid dipping. The engineering team needed to determine whether these operations met the criteria for special processes and identify the appropriate governing specifications prior to production release.
Ambiguity in identifying processes whose outputs cannot be fully verified through standard non-destructive inspection led to inconsistent specification flowdown and missing process validation records on FAI documentation.
Best Practice
Manufacturing and quality engineering must evaluate all processing steps against AS9100 and AS9102 definitions to identify special processes where post-process verification is non-viable. Ensure that operations affecting internal metallurgical states are tied to standard specifications, validated prior to release, and documented accurately on FAI Form 2.
Reflects the recommended position based on community discussion and expert review.
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