Regulation (EU) 2018/1139 of the European Parliament and of the Council of 4 July 2018 on common rules in the field of civil aviation and establishing a European Union Aviation Safety Agency, and amending Regulations (EC) No 2111/2005, (EC) No 1008/2008, (EU) No 996/2010, (EU) No 376/2014 and Directives 2014/30/EU and 2014/53/EU of the European Parliament and of the Council, and repealing Regulations (EC) No 552/2004 and (EC) No 216/2008 of the European Parliament and of the Council and Council Regulation (EEC) No 3922/91 (Text with EEA relevance) (c. 1139)

ANNEX II U.K. Essential requirements for airworthiness

1. PRODUCT INTEGRITY U.K.

1.3. Systems and equipment (other than non-installed equipment): U.K.

1.3.1. The aircraft must not have design features or details that experience has shown to be hazardous. U.K.