§ 21.319 - Design changes.

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Classification of design changes. (1) A “minor change” to the design of an article produced under a PMA is one that has no appreciable effect on the approval basis.

A “major change” to the design of an article produced under a PMA is any change that is not minor.

Approval of design changes. (1) Minor changes to the basic design of a PMA may be approved using a method acceptable to the FAA.

The PMA holder must obtain FAA approval of any major change before including it in the design of an article produced under a PMA.