Definition
An FAA approval issued to a manufacturer confirming that a specific article — typically an aircraft part, appliance, or piece of equipment such as a GPS receiver, altimeter, or seat — has been designed, tested, and produced in accordance with an applicable Technical Standard Order (TSO). The TSO sets the minimum performance and quality standards the article must meet. A TSOA authorizes the manufacturer to produce and mark the article as TSO-compliant, but it does not by itself approve installation in any particular aircraft.
Plain English
An official FAA stamp that says a piece of aviation equipment was built to meet the FAA's minimum standards for that type of equipment. It approves the part itself, not the act of bolting it into an airplane.
Context Anchor
Seen in equipment approval records, installation paperwork, avionics manuals, and discussions about whether an aviation article is approved for a particular aircraft or operation.
Derivation
The Technical Standard Order is the rule; the Authorization is the FAA's letter saying a manufacturer has met that rule. So the name simply describes what it is — an authorization tied to a specific technical standard.
Why Pilots Care
Confirms that installed equipment meets regulatory standards for IFR operations and airworthiness.
Intuition Check
Do not treat TSOA as a pilot certificate or permission for the pilot to use equipment however they want. It is an authorization to the manufacturer for the article; the aircraft installation and intended use still have to be approved separately. Also, in FAA usage this term is normally “Technical Standard Order Authorization,” not “Technical Standing Order Authorization.”
Example Sentence 1
The avionics shop confirmed the new GPS unit held a current TSOA before quoting the installation.
Example Sentence 2
The pilot reviewed the TSOA documentation during preflight to verify the GPS met IFR requirements.