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Federal Aviation Regulations

Sec. 21.120 — Responsibility of supplemental type certificate holders to provide written permission for alterations.

A supplemental type certificate holder who allows a person to use the supplemental type certificate to alter an aircraft, aircraft engine, or propeller must provide that person with written permission acceptable to the FAA.

[Doc. No. FAA–2003–14825, 71 FR 52258, Sept. 1, 2006]

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