OBS_VALUE: <ul><li><a href=http://www.law.go.kr/LSW/lsEfInfoP.do?lsiSeq=200241# target=_blank>Aviation Safety Act(항공안전법 , Enforcement Date: 30 March 2017 (Law No. 14116), last updated on 27 june 2018 (By No 15326), Article 5)</a></li><li><a href=http://www.law.go.kr/admRulInfoP.do?admRulSeq=2100000089800 target=_blank>Flight Safety Regulations for Aeroplanes(국토교통부고시 제2017-397호, Enforcement Date: 11 June 2009, last updated on 12 June 2017, Chapter IV, Article 9.1.16.3)</a></li></ul>