# Commission Regulation (EU) No 1178/2011 of 3 November 2011 laying down technical requirements and administrative procedures related to civil aviation aircrew pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council (Text with EEA relevance), Division (a): Applicants for the issue of an STI certificate shall:

Extent: E+W+S+N.I.

(1)hold, or have held within the 3 years prior to the application, a pilot licence and instructional privileges appropriate to the courses on which instruction is intended;
(2)have completed in an FSTD the relevant proficiency check for the class or type rating, in the period of 12 months immediately preceding the application.
Applicants for the issue of an STI(A) wishing to instruct on BITDs only, shall complete the exercises appropriate for a skill test for the issue of a PPL(A) only;

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Source: https://www.legislation.gov.uk/eur/2011/1178/annex/I/division/SUBPART+J/section/9/division/FCL.915.STI/division/a (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-1178/annex-I/division-SUBPART+J/section-9/division-FCL.915.STI/division-a
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.