View all text of Subpart K [§ 21.301 - § 21.320]
§ 21.320 - Changes in quality system.
After the issuance of a PMA—
(a) Each change to the quality system is subject to review by the FAA; and
(b) The holder of the PMA must immediately notify the FAA, in writing, of any change that may affect the inspection, conformity, or airworthiness of its article.