OBS_VALUE: <ul><li><a href=https://sso.agc.gov.sg/Act/MPASA1996 target=_blank>Maritime And Port Authority Of Singapore Act 1996(Maritime And Port Authority Of Singapore Act(Chapter 170a)(Original Enactment: Act 7 Of 1996)Revised Edition 1997(30th May 1997) [2nd February 1996]. Last amended on 01 April 2022. Sections 81.)</a></li><li><a href=https://sso.agc.gov.sg/Act/CAASA2009 target=_blank>Civil Aviation Authority of Singapore Act(Civil Aviation Authority Of Singapore Act(Chapter 41)(Original Enactment: Act 17 Of 2009).Revised Edition 2014(31st May 2014). Issued on 1 st July 2009. Last amended on 31 December 2021. Sections 36 (5).)</a></li><li><a href=https://sso.agc.gov.sg/SL/CAASA2009-S311-2009 target=_blank>Civil Aviation Authority of Singapore (Licensing of Airport Operators) Regulations 2009(Civil Aviation Authority of Singapore (Licensing of Airport Operators) Regulations 2009. Issued on 01 July 2009. Last amended on 01 September 2020. )</a></li></ul>