14 CFR 21.601 - Applicability and definitions.

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§ 21.601 Applicability and definitions.

(a) This subpart prescribes -

(1) Procedural requirements for issuing TSO authorizations;

(2) Rules governing the holders of TSO authorizations; and

(3) Procedural requirements for issuing letters of TSO design approval.

(b) For the purposes of this subpart -

(1) A TSO issued by the FAA is a minimum performance standard for specified articles used on civil aircraft;

(2) A TSO authorization is an FAA design and production approval issued to the manufacturer of an article that has been found to meet a specific TSO;

(3) A letter of TSO design approval is an FAA design approval for an article that has been found to meet a specific TSO in accordance with the procedures of § 21.621;

(4) An article manufactured under a TSO authorization, an FAA letter of acceptance as described in § 21.613(b), or an article manufactured under a letter of TSO design approval described in § 21.621 is an approved article for the purpose of meeting the regulations of this chapter that require the article to be approved; and

(5) An article manufacturer is the person who controls the design and quality of the article produced (or to be produced, in the case of an application), including any related parts, processes, or services procured from an outside source.

Title 14 published on 2015-11-17

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 14 CFR Part 21 after this date.

  • 2016-12-30; vol. 81 # 251 - Friday, December 30, 2016
    1. 81 FR 96572 - Revision of Airworthiness Standards for Normal, Utility, Acrobatic, and Commuter Category Airplanes
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Final rule.
      Effective August 30, 2017.
      14 CFR Parts 21, 23, 35, 43, 91, 121, and 135

Title 14 published on 2015-11-17.

The following are only the Rules published in the Federal Register after the published date of Title 14.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2016-12-30; vol. 81 # 251 - Friday, December 30, 2016
    1. 81 FR 96572 - Revision of Airworthiness Standards for Normal, Utility, Acrobatic, and Commuter Category Airplanes
      GPO FDSys: XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Final rule.
      Effective August 30, 2017.
      14 CFR Parts 21, 23, 35, 43, 91, 121, and 135