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21-16G AIR-100 RTCA Document DO-160 versions D, E and F, “Environmental Conditions and Test Procedures for Airborne Equipment”

a. This advisory circular (AC) identifies RTCA Document No. (RTCA/DO)-160 versions D, E, F, and G, Environmental Conditions and Test Procedures for Airborne Equipment, dated July 27, 1997, December 20, 2005, December 6, 2007, and December 8, 2010, respectively, as containing acceptable environmental qualifications to show compliance with certain airworthiness requirements. The FAA strongly encourages the use of RTCA/DO-160G for new articles.

b. Appendix 1 of this AC provides a summary of the changes from RTCA/DO-160C to RTCA/DO-160D, version D to E, version E to F, and F to G. The information in the table will assist you in determining if a particular version of RTCA/DO-160 is acceptable.

21-51 AIR-110 Applicant’s Showing of Compliance and Certifying Statement of Compliance

We, the Federal Aviation Administration (FAA), wrote this advisory circular (AC) to describe how to comply with the requirements of Title 14 of the Code of Federal Regulations (14 CFR) 21.20, 21.97 and 21.303(a)(5). 
 This AC is not mandatory and is not a regulation.  This AC describes an acceptable means, but not the only means, to comply with the requirements 14 CFR 21.20, 21.97 and 21.303(a)(5).  However, if you use the means described in this AC, you must follow it entirely

21.303-4 AIR-110 Application for Parts Manufacturer Approval Via Tests and Computations or Identicality

a.  This advisory circular (AC) updates the Federal Aviation Administration’s (FAA) guidance to applicants for parts manufacturer approval (PMA) of articles via tests and computations or identicality without a license agreement.  This AC cites regulations in Title 14, Code of Federal Regulations (14 CFR) part 21, Subpart K that became effective April 16, 2011.  In addition, this AC provides a convenient application and compliance checklist, adds a certifying statement of compliance, provides guidance for assessing an article’s impact on safety and describes how the FAA approves replacement parts for technical standard order (TSO) articles.  This AC does not apply to the articles that are listed in 14 CFR 21.9(a)(1) through (6).

b.  This AC refers to parts and components as articles per 14 CFR 21.1.  This section defines an article as a material, part, component, process or appliance.  These items may include sealants, modified standard parts, brake assemblies, etc. that are in a product’s type design.  Please note PMA is not for base materials, processes or inspection procedures.

c.  This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to comply with 14 CFR Part 21, Subpart K.  If you chose to use any of these best practices, we expect you to follow it completely.  Adherence to the guidance for each applicable facet will show that an article’s design complies with the airworthiness requirements of its eligible products.  Also consult other ACs when you need guidance on product specific requirements for showing compliance.  For example, AC 33-8 has guidance for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts under Test and Computation.

21-54 AIR-110 Experimental Airworthiness Certification of Certain Former Military Aircraft

This advisory circular (AC) provides information and guidance concerning special airworthiness certification in the experimental category of certain former military aircraft under Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Parts, §§ 21.191(a), (c), (d), (e); and 21.193.


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