Technical Standard Order

Source: Wikipedia, the free encyclopedia.

A Technical Standard Order (TSO) is a minimum performance standard issued by the

type certified products by following a much lighter process than similar non-TSO approved parts, provided the TSO standard meets the aircraft requirements.[1] The TSO authorization (also called TSOA) or a letter of TSO Design Approval does not necessarily convey approval for installation.[2]

Similar standards are maintained by other aviation authorities. For example European Technical Standard Orders (ETSO) by

EASA for the European Union,[3] with limited reciprocal equivalence on a per-country basis.[4]
These often have the same numbers as FAA TSOs. For example, the FAA TSO for aviation headsets is C139. In the European Union, it is ETSO-C139.

See also

References

  1. FAA. "Installation of TSO'd Product Considerations and Guidance" (PDF). Archived from the original
    (PDF) on 26 April 2014.
  2. ^ "CFR 2011, Title 14, Volume 1, Part 21, Subpart O" (PDF).
  3. EASA (31 March 2023). "ETSO"
    .
  4. ^ "FAA Technical Standard Order Authorization (TSOA) and EASA European TSOA (ETSOA) Reciprocal Acceptance Frequently Asked Questions (FAQs)" (PDF). Archived from the original (PDF) on 28 June 2023.

External links


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