American Association of Advanced Metrology accreditation examines a range of criteria in three categories:
  1. Prerequisite accreditation(s)
  2. Prescriptive criteria
  3. Performance analysis
Prerequisite accreditations include ISO 9001 and ISO 17025.  The review board may, at its discretion, waive the requirement for any or all accreditations if and only if the candidate body is able to demonstrate, to the board’s satisfaction, that all requirements for these certifications have in fact been met or exceeded.  Additional certifications, such as AS9100, may be required of AAAM 44.9-certified laboratories that wish to be endorsed to serve specific industries.

Conversely, the board reserves the right to disregard any or all of these accreditations, if the board finds de facto failure to meet, at the time of review, the minimum requirements for the accreditation — even if the accreditation has been granted de jure by another independent certifying agency.  From the time that this determination is made, the candidate will have ninety (90) days to demonstrate that minimum compliance has been achieved, or else the application will lapse and a new application and fee will be required.

Prescriptive criteria are generally considered to have been met when the candidate submits verifiable documentation of managerial and staff experience with a range of design experience, OEM spec interpretation experience, knowledge of current 3D scanning technologies as of the most recent accreditation revision, experience with an approved computer-aided inspection (CAI) software package, and a documented system of quality assurance procedures.

The performance analysis follows when the review board determines that all prerequisite and prescriptive criteria have been met.  An auditor normally performs an on-site laboratory inspection and reviews the relevant ANOVA Gauge Repeatability and Reproducibility (R&R) studies.  Management and staff are required to demonstrate competency with approved scanning and post-processing technologies.  Finally, a stepwise analysis of the quality assurance procedures is conducted to verify the candidate’s consistent capability of producing reliable, useful inspection reports to its internal or external clients.