Authorised places of entry and departure by air
3.—(1)  For the purposes of the Act, each place set out in the first column of Part I of the Second Schedule shall, for the hours set out in the second column thereof, be an authorised airport and an authorised point of entry and an authorised point of departure for any person arriving in or leaving Singapore by air.
(2)  For the purposes of the Act, each place set out in the first column of Part II of the Second Schedule shall, for the hours set out in the third column thereof, be an authorised airport and an authorised point of entry and an authorised point of departure for the separate and exclusive immigration clearance of the particular person or class of persons arriving in or leaving Singapore by air specified in the second column thereof.