3. Hijacking. (1) Whoever on board an aircraft in flight, unlawfully, by force or threat of force or by any other form of intimidation, seizes or exercises control of that aircraft, commits the offence of hijacking of such aircraft. (2) Whoever attempts to commit any of the acts referred to in sub-section (1) in relation to any aircraft, or abets the commission of any such act, shall also be deemed to have committed the offence of hijacking of such aircraft. (3) For the purposes of this section, an aircraft shall be deemed to be in flight at any time 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, the flight shall be deemed to continue until the competent authorities of the country in which such forced landing takes place take over the responsibility for the aircraft and for persons and property on board.