# 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): The holder of an FSTD qualification certificate shall establish and maintain a system to identify, assess and incorporate any important modifications into the FSTDs it operates, especially:

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

(1)any aircraft modifications that are essential for training, testing and checking, whether or not enforced by an airworthiness directive; and
(2)any modification of an FSTD, including motion and visual systems, when essential for training, testing and checking, as in the case of data revisions.

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Source: https://www.legislation.gov.uk/eur/2011/1178/annex/VII/division/SUBPART+FSTD/section/I/division/ORA.FSTD.110/division/a (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-1178/annex-VII/division-SUBPART+FSTD/section-I/division-ORA.FSTD.110/division-a
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.