Approval of Modified Seating System Initially Approved Under a Technical Standard Order This advisory circular (AC) provides information, clarification, and procedural guidance for the approval and installation of modified technical standard order (TSO)approved seating systems in U.S. type-certificated aircraft. In this AC, we address modifications that result from design changes, repairs, and alterations pursuant to Title 14 of the Code of Federal Regulations (14 CFR) parts 21 and 43. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to modify TSO seating systems. However, if you use the means described in this AC, you must follow it in all important respects. Production Under 14 CFR Part 21,Subparts F, G, K, and O This advisory circular (AC) provides information for production approval holders (PAH) pursuant to Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Articles.

This AC provides PAHs and applicants for a production approval with guidance for developing and maintaining a production system that is appropriate to the PAH’s operations and complies with the regulations. Issuance of Export Airworthiness Approvals Under 14 CFR Part 21 Subpart L This advisory circular (AC) provides guidance on how to show compliance with Title 14 of the Code of Federal regulations (14 CFR) part 21, subpart L, Export Airworthiness Approvals. 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 these requirements. 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);

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.  popular ac unit brandsIf you chose to use any of these best practices, we expect you to follow it completely.  car a/c repair londonAdherence to the guidance for each applicable facet will show that an article’s design complies with the airworthiness requirements of its eligible products.  when do ac units go on saleAlso 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. 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 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. Using Electronic Modeling Systems as Primary Type Design Data This AC provides information and guidance on developing procedures for using electronic modeling systems in design, manufacture, installation, and inspection processes.  It applies to applicants for Type Certificates (TCs), Amended Type Certificate (ATCs), Supplemental Type Certificates (STCs), Parts Manufacturer Approval (PMA), Technical Standard Order Authorizations (TSOA), major alterations, and major repairs.  In this AC, we explain how you can submit a proposal to use electronic modeling system data instead of (or in addition to) traditional paper format for the technical data required for initial and post certification activities. 

We identify the minimum criteria for using electronic type design data, and include requirements for how to access and present the data.  In this AC, we define an “electronic modeling system” as a three?dimensional (3-D) modeling system. For Federal Aviation Administration (FAA) certification applicants, this AC mirrors our procedures in Order 8000.79, Use of Electronic Technology and Storage of Data, and Guide FAA-IR-01?01A, Aircraft Certification Guide for the Use of Electronic Technology and Alternative Methods of Storing Information. This AC must be used in conjunction with Order 8000.79 and Guide FAA-IR-01-01A. This AC is not mandatory and does not constitute a regulation.  We describe acceptable means, though it is not the only means, for using electronic modeling systems in design, manufacture, installation, and inspection processes.  If you use the means described in this AC, you must follow it in its entirety Submittal Of Data To An ACO, A DER Or An ODA For A Major Repair Or Major Alteration