Deposit of arms and explosives
4.—(1)  The person in command of every aircraft landing in Singapore shall require every person on board having in his possession any arms or explosives to deposit the arms or explosives with him and shall forthwith on arrival in Singapore —
(a)deliver the arms or explosives to an officer of the Customs and Excise Department not below the rank of senior officer of customs or, where no such officer is available, to a member of the Singapore Airport Terminal Services Auxiliary Police Force or the Changi Airport Services Auxiliary Police Force not below the rank of sergeant, who shall forthwith deposit the arms or explosives with a licensing authority —
(i)in the case of arms or explosives belonging to a person in transit through Singapore, until the departure of that person from Singapore; and
(ii)in the case of arms or explosives belonging to any other person, until such other person has obtained from a licensing authority a licence to possess such arms or explosives; or
(b)deposit the arms or explosives with a licensing authority, in cases where neither an officer of the Customs and Excise Department not below the rank of senior officer of customs nor a member of the Singapore Airport Terminal Services Auxiliary Police Force or the Changi Airport Services Auxiliary Police Force not below the rank of sergeant is on duty.
(2)  Any person on board any aircraft entering Singapore who fails to deposit any arms or explosives in his possession with the person in command of the aircraft shall be guilty of an offence under these Rules.
(3)  The person in command of any aircraft from which any person removes or attempts to remove any arms or explosives required to be deposited with him under paragraph (1) shall be guilty of an offence under these Rules:
Provided that it shall be a good defence to any charge under this rule if the person in command of the aircraft satisfies the court that he took all reasonable steps to comply with paragraph (1).