A2LA would conduct a Laboratory quality management system audit to ISO 17025, which is NOT specific to the aerospace industry.
Nadcap is much deeper and more prescriptive and is specific to the aerospace industry. For instance, Nadcap requires ISO 17025 is the prerequisit QMS and then adds any of the following specifications that apply to your Lab: (SEE LISTING BELOW).
To contact me, see my profile. Sincerely, David Johnson
Materials Testing
AC7006 Rev F - Audit Criteria for Accreditation to ISO/IEC 17025
AC7101/1 Rev D - Nadcap Audit Criteria for Materials Testing Laboratories - (General Requirements for All Laboratories)
AC7101/2 Rev B - Nadcap Audit Criteria for Materials Test Laboratories - (Chemical Testing)
AC7101/3 Rev B - Nadcap Audit Criteria for Materials Test Laboratories - (Mechanical Testing)
AC7101/4 Rev C - Nadcap Audit Criteria for Materials Testing Laboratories - (Metallography and Microhardness)
AC7101/5 Rev B - Nadcap Audit Criteria for Materials Testing Laboratories - (Hardness)
AC7101/6 Rev B - Nadcap Audit Criteria for Materials Testing Laboratories - (Corrosion)
AC7101/7 Rev B - Nadcap Audit Criteria for Materials Testing Laboratories - (Mechanical Testing Specimen Preparation)
AC7101/8 Rev A - Nadcap Audit Criteria for Materials Test Laboratories - (Differential Thermal Analysis)
AC7101/8 Rev B - Nadcap Audit Criteria for Materials Test Laboratories - Differential Thermal Analysis [to be used on audits ON or AFTER 2-Aug-09]
AC7101/9 Rev A - Nadcap Audit Criteria for Materials Test Laboratories - (Heat Treating)
AC7101/11 Rev A - Nadcap Audit Criteria for Materials Test Laboratories - (Fastener Testing)
Non-Metallic Materials Testing (NMMT)
AC7122 - Nadcap Audit Criteria for Non-Metallic Materials Testing Laboratories
AC7122/1 - Nadcap Audit Criteria for Non-Metallic Materials Testing Laboratories - (Class A: Composites)
Non-Destructive Testing (NDT)
AC7114 Rev C - Nadcap NonDestructive Testing (NDT) Suppliers Accreditation Program Audit Criteria
AC7114/1 Rev C - Nadcap Audit Criteria for Non-Destructive Testing Facility Penetrant Survey
AC7114/2 Rev C - Nadcap Audit Criteria for Non-Destructive Testing Magnetic Particle Survey
AC7114/3 Rev D - Nadcap Audit Criteria for Non-Destructive Testing Facility Ultrasonic Survey
AC7114/4 Rev C - Nadcap Audit Criteria for Non-Destructive Testing Facility Film Radiography Survey
AC7114 S Rev D - Supplemental Audit Criteria for Nadcap Non-Destructive (NDT) Suppliers Accreditation Program Audit Criteria
AC7114/1S Rev D - Supplemental Audit Criteria for Nadcap Audit Criteria for Non-Destructive Testing Facility Penetrant Survey
AC7114/2S Rev D - Supplemental Audit Criteria for Nadcap Audit Criteria for Non-Destructive Testing Magnetic Particle Survey
AC7114/3S Rev D - Supplemental Audit Criteria for Nadcap Audit Criteria for Non-Destructive Testing Facility Ultrasonic Survey
AC7114/4S Rev D - Supplemental Audit Criteria for Nadcap Audit Criteria for Non-Destructive Testing Facility Film Radiography Survey
EDIT NOTE: David Johnson's Company and Contact Information can be found in his Profile.