After 2nd March 2016 the TSOA/ETSOA reciprocal acceptance is the process by which the importing authority will accept the exporting authority’s approval of a TSO article without the importing authority issuing an approval. In plain language, this means the FAA will accept an EASA ETSOA for an article from the European Union (EU) and the FAA will no longer issue a Letter of TSO Design Approval (LODA). Likewise, EASA will accept the FAA’s TSOA for an article from the United States without issuing an ETSOA.
New validation requests will only be accepted for articles which are explicitly exempted from reciprocal acceptance in TIP rev. 5 (paragraph 2.5.2).