Commonwealth Consolidated Regulations Commonwealth Consolidated Regulations(a) requirements for the issue of Australian Technical Standard Order (ATSO) authorisations; and
(b) rules governing the holders of ATSO authorisations; and
(c) requirements for the issue of a letter of ATSO design approval.
(2) For the purpose of these Regulations:
(a) an ATSO (short for Australian Technical Standard Order) is a minimum performance standard prescribed by the Part 21 Manual of Standards for specified articles used on civil aircraft; and
(aa) an ETSO is a European Technical Standard Order issued by EASA; and
(ab) a TSO is a Technical Standard Order issued by the FAA; and
(b) an ATSO authorisation is:
(i) a CASA design and production approval issued to the manufacturer of an article that has been found to meet a specific ATSO, ETSO or TSO; or
(ii) a CASA production approval issued to the manufacturer of an article manufactured in accordance with an FAA letter of TSO design approval; and
(c) a letter of ATSO design approval is a CASA design approval for a foreign - manufactured article which has been found to meet a specific ATSO in accordance with the procedures of regulation 21.617; and
(ca) an FAA letter of TSO design approval is an FAA design approval for an article manufactured outside the United States that has been found to meet a specific TSO in accordance with the procedures of FARs section 21.617; and
(d) an article manufactured under an ATSO authorisation or an appliance manufactured under a letter of ATSO design approval described in regulation 21.617 is an approved article or appliance for the purpose of meeting the provisions of these Regulations that require the article to be approved; and
(e) 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 the parts of them and any processes or services related to them that are procured from an outside source.
(3) For the purpose of this Subpart, articles means materials, parts, processes, or appliances.
(4) Despite subregulation 21.605(4), CASA is not required to issue an ATSO authorisation for an article if the manufacturing facilities for the article are located outside Australian territory, unless the location of the manufacturer's facilities places no undue burden on CASA in administering the applicable airworthiness requirements.
Source FARs section 21.601 modified.