Section 2

an act done in Singapore which constitutes the offence of murder, attempted murder, culpable homicide not amounting to murder, voluntarily causing grievous hurt, voluntarily causing hurt by dangerous weapons or means, or an offence under —

section 4 of the Arms Offences Act 1973;

section 3 or 4 of the Corrosive and Explosive Substances and Offensive Weapons Act 1958;

section 3 or 4 of the Explosive Substances Act 1924; or

section 3 of the Kidnapping Act 1961; and

an act done outside Singapore which, if done in Singapore, would constitute an offence mentioned in paragraph (a);

in Singapore, means an offence that is (apart from this Act) constituted under any written law in force in Singapore; and

outside Singapore, means the commission of the act that would (apart from this Act) have been an offence under any written law in force in Singapore had it been committed in Singapore.

the period during which an aircraft is in flight is deemed to include any period from the moment when all its external doors are closed following embarkation until the moment when any such door is opened for disembarkation, and, in the case of a forced landing, any period until the competent authorities take over responsibility for the aircraft and for persons and property on board; and

an aircraft is taken to be in service during the whole of the period which begins with the pre-flight preparation of the aircraft for a flight and ends 24 hours after the aircraft lands having completed that flight, and also at any time (not falling within that period) while, in accordance with paragraph (a), the aircraft is in flight.