PURPOSE.

This advisory circular (AC) describes a system for accrediting civil aircraft parts distributors based on voluntary industry oversight. The AC also provides information for developing accreditation programs. We, the Federal Aviation Administration (FAA), strongly endorse participation in such a program to help certificated persons establish the eligibility of parts and products for installation on U.S. type-certificated (TC) products. We have revised this AC to meet current changes in regulatory requirements and industry practices since original publication. This AC is not mandatory and does not constitute a regulation. Any mandatory language used in this AC applies only to those who choose to voluntarily participate in this program; those who do choose to participate must follow the processes and procedures described in this AC in their entirety to be considered compliant with this program.