FAR 21.305 — PMA Organization
FAR 21.305 explains how a Parts Manufacturer Approval (PMA) applicant must document its organization, assign responsibilities, and identify an accountable manager.
FAR 21.305 sets the organizational requirements for anyone applying for or holding a Parts Manufacturer Approval (PMA). While this rule is aimed at manufacturers rather than pilots, understanding it helps you appreciate how the FAA ensures replacement and modification parts on your aircraft meet airworthiness standards.
A PMA applicant or holder must give the FAA a written document that:
- Describes how the organization will ensure compliance with Subpart K (the PMA subpart).
- Describes assigned responsibilities, delegated authorities, and how the quality function relates to management and other parts of the company.
- Identifies an accountable manager.
The accountable manager is the key figure. They must:
- Have authority over all production operations under Part 21.
- Confirm that the procedures in the quality manual required by § 21.308 are in place.
- Ensure the company satisfies the airworthiness requirements of Subchapter C.
- Serve as the primary FAA contact.
Operationally, this is why PMA parts you encounter during maintenance carry traceable approvals — there's a defined organization and a single person accountable to the FAA.