OBS_VALUE: <ul><li><a href=https://sso.agc.gov.sg/Act/MPASA1996#pr2- target=_blank>Maritime And Port Authority Of Singapore Act 1996 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 March 2021. Sections 80, 81.)</a></li><li><a href=https://sso.agc.gov.sg/SL/CAASA2009-S298-2009 target=_blank>Civil Aviation Authority of Singapore (Price Control of Aeronautical Charges) Rules 2009(Civil Aviation Authority of Singapore (Price Control of Aeronautical Charges) Rules 2009, enacted 01 July 2009, last amended 01 April 2023, articles 2 and 3, First Schedule )</a></li><li><a href=https://sso.agc.gov.sg/SL/ANA1966-S166-2017?DocDate=20170412#pr5- target=_blank>Air Navigation (Regulated Air Cargo Agents) Regulations 2017(No. S 166Air Navigation Act(Chapter 6)Air Navigation (Regulated Air Cargo Agents) Regulations 2017. Last amended on 04 December 2020.)</a></li></ul>