21.231—Applicability.
This subpart prescribes procedures for—
(a)
Obtaining and using a delegation option authorization for type, production, and airworthiness certification (as applicable) of—
(1)
Small airplanes and small gliders;
(2)
Commuter category airplanes;
(3)
Normal category rotorcraft;
(4)
Turbojet engines of not more than 1,000 pounds thrust;
(5)
Turbopropeller and reciprocating engines of not more than 500 brake horsepower; and
(6)
Propellers manufactured for use on engines covered by paragraph (a)(4) of this section; and
(b)
Issuing airworthiness approval tags for engines, propellers, and parts of products covered by paragraph (a) of this section.
Code of Federal Regulations
[Amdt. 21-5, 30 FR 11375, Sept. 8, 1965, as amended by Amdt. 21-59, 52 FR 1836, Jan. 15, 1987]
Code of Federal Regulations
Effective Date Note:
By Amdt. 21-92, 74 FR 53390, Oct. 16, 2009, § 21.231(a)(6) was amended by removing the words “paragraph (a)(4)” and adding in their place the words “paragraph (a)(5)”, effective Apr. 14, 2010. The effective date of this amendment was subsequently postponed to Apr. 16, 2011 at 75 FR 9095, Mar. 1, 2010.