Federal Aviation Regulations
Sec. 21.431 — Applicability.
(a) This subpart prescribes Designated Alteration Station (DAS) authorization procedures for—(1) Issuing supplemental type certificates;
(2) Issuing experimental certificates; and
(3) Amending standard airworthiness certificates.
(b) This subpart applies to domestic repair stations, air carriers, commercial operators of large aircraft, and manufacturers of products.
[Amdt. 21–6, 30 FR 11379, Sept. 8, 1965; 30 FR 11849, Sept. 16, 1965, as amended by Amdt. 21–74, 62 FR 13253, Mar. 19, 1997]
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