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The process is analogous to 'after-market' parts for automobiles, except that the United States aircraft parts production market remains tightly regulated by the FAA. An applicant for a PMA applies for approval from the FAA. The FAA prioritizes its review of a new application based on its internal process called Project Prioritization. [5]
The manufacturers that meet these standards are issued Parts Manufacturer Approval (PMA) by the FAA. Because the United States was the first nation to adopt rules permitting the manufacture of aircraft after market parts (and for many decades was the only nation with these rules), the PMA industry is primarily concentrated in the United States.
The FAA permits the aircraft owner or operator to produce replacement parts from scratch (using the original as a template and using the same dimensions and materials), and document it in the logbooks as an "owner-produced part" in accordance with FAR §21.9(a)(5). [7]
Unapproved aircraft parts are aircraft parts not approved by civil aviation authorities for installation on type certified aircraft. [1]For example, the Federal Aviation Administration (FAA) defines a "standard part" as a part produced in accordance with government regulations, and it defines an "approved part" as a "standard part" that is in accordance with a specific set of criteria and ...
FAA regulation FAR/AIM Federal Aviation Regulation / Aeronautical Information Manual: Bundle of FAA regulations and Aeronautical Manual [13] FAROS final approach runway occupancy signal FAS final approach segment FAT Free air temperature FATO final approach and take off FB Winds aloft: World Meteorological Organization abbrev. see also FD FBO
In the case of the USA, for example, that authority is the FAA, and if the FAA finds that the proposed changes are too substantial, a new type certificate will be required under 14 CFR 21.19. In this case, a substantially complete investigation of compliance with the applicable regulations will be required. [1] [2]
Articles with TSO design approval are eligible for use on United States type certified products by following a much lighter process than similar non-TSO approved parts, provided the TSO standard meets the aircraft requirements. [1]
Superior Air Parts started as a manufacturer of valve guides in 1967. The company branched out into FAA/PMA approved parts for general aviation aircraft. The company manufactures replacement parts for Lycoming and Continental aircraft engines. The cylinder assemblies use newer cylinder head alloys and fully hardened cylinder liners. [1]
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