OBS_VALUE: <ul><li><a href=https://sso.agc.gov.sg/SL/ANA1966-RG2?DocDate=20140101 target=_blank>Air Navigation (Licensing of Air Services) Regulations(G.N. No. S 344/1974, 1 January 1975, last amended on 1 January 2014, Part IA, Section 2F, 2G, 2H(5))</a></li></ul>