Aircraft part

Component approved for type certified aircraft
An aircraft part is an article or component approved for installation on a type certificated aircraft. Approval for these parts is derived from the jurisdictions of the countries that an aircraft is based. In the United States, the Federal Aviation Administration oversees the approval for these parts under Federal Aviation Regulation Part 21.

A production certificate holder may produce parts from the type design that is associated with the production approval. Parts manufactured under a Production Certificate are considered to be "approved parts."

A Parts Manufacturer Approval, or PMA, is one way to obtain approval to produce replacement or modification parts for installation on a type certificated product. Such parts are considered to be "approved parts."

Parts and assemblies may be produced under a Technical Standard Order Authorization (TSOA). Such parts are considered to be "approved parts."

Flight critical parts are usually regulated by the FAA and the European Union. These include, navigation systems, communication systems, traffic collision avoidance system (TCAS), etc.

Some high value aircraft parts can be repaired using various re manufacturing processes such as machining, welding, plating, etc. The techniques described in Advisory Circular 43.13 1B are generally used as guidance for repair processes that are not specifically described by the manufacturer.

Low jet fuel prices and new programs delays lead to keeping airliners in service for longer, relying increasingly on used parts: their market will grow from $4.5 billion in 2016 to $7.7 billion in 2026.<!

Aircraft parts are produced by manufacturers. FAA approved aircraft and aircraft parts manufacturers are represented by the Aerospace Industries Association (commercial aircraft manufacturers), General Aviation Manufacturers Association (general aviation aircraft manufacturers) and Modification and Replacement Parts Association (MARPA) (aircraft parts manufacturers). The Aeronautical Repair Station Association (ARSA) represents organizations which repair aircraft and parts thereof. Some aircraft parts are sold by distributors. Distributors of aircraft parts are represented by the Aviation Suppliers Association.