1. Statistical Product Acceptance
IAQG 9138
Statistical Product Acceptance
(SAE AS9138, ASD-STAN prEN9138, SJAC9138)
Planned Update
to AAQG 9013
(SAE ARP9013 series)
Technically equivalent standards to 9138 are published in all International Aerospace Quality Group (IAQG) sectors. In the Americas sector, 9138 is published as AS In Europe and Africa, it is published as EN In Asia, it is published as SJAC9138.
9138 Summary
2017

2. Management Summary
9138 gives methods for statistical product acceptance
Explains 9100 statistical requirements [1]
Consumer protection statistics
Extends the AAQG 9013 (SAE ARP9013 series) focus
Implements “C=0” sampling
Provides flexibility by offering multiple statistical options
Applicable when
Chosen by a company or
Invoked via contract [2]
[1] “When sampling is used as a means of product acceptance, the sampling plan shall be justified on the basis of recognized statistical principles and appropriate for use.”
[2] “The organization shall communicate to external providers its requirements for ... the use of statistical techniques for product acceptance and related instructions”
-- IAQG 9100 QMS Requirements for Aviation, Space and Defense

3. IAQG 9138 Statistical Product Acceptance
What was SAE ARP9013?
Statistical Product Acceptance
Written and tested by AAQG
Published by SAE as 5-volume ARP9013 series in 2005
Base standard and definitions,
Isolated lots,
Lots in a series,
Product accepted on the basis of process controls,
Product made one unit at a time, and special cases.
ARP9013 did not address statistical methods for
Quality improvement
Business statistics
Provided methods “to ensure that each part conforms”
Quote is from U.S., Asian, and European Regulations.
ARP9013 to be cancelled after 9138 publication
IAQG 9138 Statistical Product Acceptance

4. ARP9013 Connection to Regulatory Interests
US FAA Advisory Circular 21-43:
“2-7. Inspection and Testing. Section (e) requires procedures for inspections and tests used to ensure that each product and article conforms to its approved design.
c. Statistical Processes.
(1) PAHs should document the use of statistical processes in the quality manual. Statistical processes will ensure that criteria for acceptance or rejection prevent the acceptance of nonconforming products or articles.
PAHs may use SAE ARP9013, Statistical Product Acceptance Requirements, which sets forth general requirements for implementing ... statistical product acceptance methods....”
“2-7.c.(3) Engineering and manufacturing organizations should participate in the review, implementation, and maintenance of statistical quality/process control techniques used for product or article acceptance.”
PAH stands for Production Approval Holder.
Note that the October 2015 revision to AC21-43A was published by the AIR-112 organization within the FAA which has responsibility over Engineering functions. This adds importance to the recommendation that the Engineering organization participate in these developments.
FAA Advisory Circular 21-43:
“2-7. Inspection and Testing PAHs may use SAE ARP9013, Statistical Product Acceptance Requirements, which sets forth general requirements for implementing any of the following statistical product acceptance methods:
(a) SAE ARP9013/1, Statistical Product Acceptance Requirements Using Isolated Lot Sampling Methods;
(b) SAE ARP9013/2, Statistical Product Acceptance Requirements Using Attribute or Variable Lot Acceptance Sampling Plans;
(c) SAE ARP9013/3, Statistical Product Acceptance Requirements Using Process Control Methods; or
(d) SAE ARP9013/4, Statistical Product Acceptance Requirements Using Continuous Sampling, Skip-Lot Sampling, or Methods for Special Cases.
PAH = “Production Approval Holder”
IAQG 9138 Statistical Product Acceptance

5. IAQG 9138 Statistical Product Acceptance
New Features for 9138
Upgrade from ARP9013
Compressed the 5 volumes into one
Successes, lessons learned using ARP9013
Additional references and upgrades for global usage
Improved readability, new flowcharts, expanded tables and tools
Improved mathematical tools and functions
Materials in Supply Chain Management Handbook
The SCMH material contains guidance and illustrations of ways to meet 9138 requirements.
Easy access to:
Default risk values
Sampling Tables
Sample size computing algorithms
Incorporated interests from key global stakeholders including suppliers, oversight agencies, other standards development organizations, OEMs
IAQG 9138 Statistical Product Acceptance

6. IAQG 9138 Statistical Product Acceptance
9138 Highlights
Integration of Engineering & Production roles
Recognizes “statistical principles” as required by 9100 QMS
Flow charts and step-by-step guides
A table of benchmark risk levels
Guidance on training, technical auditing of sampling plans
New statistical methods
Guidance on destructive testing
Methods of handling rejected lots
Methods for inspecting for clusters of nonconformances
IAQG 9138 Statistical Product Acceptance

7. IAQG 9138 Statistical Product Acceptance
9138 Highlights (cont.)
Strengthened connection to measurement standards
Product acceptance based on process controls
More detailed than in ARP9013
The process control methods in ARP9013 were the first recognized by the US FAA as adequate for product acceptance
Increased clarity of use of PFMEA
Step-by-step guidance provided in special Appendix
Recommendations for developing new statistical methods
SCMH has free sampling tables, algorithms, tips, & examples
IAQG 9138 Statistical Product Acceptance

8. IAQG 9138 Statistical Product Acceptance
Conclusion
This 9138 standard is the IAQG planned upgrade for SAE ARP9013 which has been recognized as a “Best Practice” by a major regulatory authority.
More detailed training has been prepared for technical users.
Contributing companies have included:
Rolls-Royce plc, AgustaWestland, Kazan Helicopters, MHI, Spirit AeroSystems, Boeing Commercial Airplanes, Saab, Boeing Tianjin, BAE Systems, Airbus
IAQG 9138 Statistical Product Acceptance

9. Statistical Product Acceptance
IAQG 9138
Statistical Product Acceptance
(SAE AS9138, ASD-STAN prEN9138, SJAC9138)
Planned Update
to AAQG 9013
(SAE ARP9013 series)
9138 Summary
2017