{"id":"C2004A00001","name":"Crimes (Protection of Aircraft) Act 1973","slug":"crimes-protection-of-aircraft-act-1973","collection":"act","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":"34 of 1973","makingDate":null,"administeringDepartment":null,"currentVersion":{"id":2640,"registerId":"commonwealth-C2004A00001-current","compilationNumber":null,"startDate":"2026-03-29","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Crimes (Protection of Aircraft) Act 1973","content":"Crimes (Protection of Aircraft)\n\nAct 1973\n\nNo. 34 of 1973\n\nAN ACT\n\nTo approve Ratification by Australia of the Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation, to give effect to that Convention and to provide for the Punishment of Unlawful Acts of the kinds dealt with by that Convention in certain circumstances in which that Convention does not apply.\n\n\\[Assented to 27 May 1973\\]\n\nBE IT ENACTED by the Queen, the Senate and the House of Representatives of Australia, as follows:—\n\nShort title.\n\n1. This Act may be cited as the Crimes (Protection of Aircraft) Act 1973.\n\nCommencement.\n\n2. (1) Sections 1, 2, 3, 6, 21, 22 and 23 shall come into operation on the day on which this Act receives the Royal Assent.\n\n(2) The remaining provisions of this Act shall come into operation on a date to be fixed by Proclamation, being a date not earlier than the date on which the Convention enters into force for Australia.\n\n  \n\nInterpretation.\n\n3. (1) In this Act, unless the contrary intention appears—\n\n“aircraft” includes any machine that can derive support in the atmosphere from the reactions of the air;\n\n“Australia” includes all the Territories;\n\n“Australian aircraft” means-\n\n(a) an aircraft registered or required to be registered in accordance with the Air Navigation Regulations as an Australian aircraft; or\n\n(b) an Australian Government aircraft;\n\n“Australian Government aircraft” means an aircraft that is owned by, or is in the possession or control of, the Commonwealth or an authority of the Commonwealth, and includes a defence aircraft;\n\n“authority of the Commonwealth \" includes Qantas Airways Limited;\n\n“authorized person” means-\n\n(a) a person appointed by the Minister, by instrument in writing, to be an authorized person for the purposes of the provision in which the expression occurs; or\n\n(b) a person included in a class of persons appointed by the Minister, by instrument in writing, to be authorized persons for the purposes of the provision in which the expression occurs;\n\n“Convention” means the Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation, being the Convention a copy of the text of which in the English language is set out in the Schedule;\n\n“Convention offence” means an offence against this Act in respect of which the circumstances referred to in paragraph 7(2)(a) are applicable;\n\n“defence aircraft” means an aircraft of any part of the Defence Force, and includes, an aircraft that is being commanded or piloted by a member of that Force in the course of his duties as such a member;\n\n“Magistrate” means-\n\n(a) a person who holds office as a Chief, Stipendiary, Police, Resident or Special Magistrate of a Territory; or\n\n(b) a person who holds office as a Chief, Stipendiary, Police, Resident or Special Magistrate of a State and in respect of whom an arrangement in force under section 21 is applicable;\n\n  \n\n“part of Australia” means a State or Territory;\n\n“prescribed flight” means a flight—\n\n(a) in the course of trade and commerce with other countries or among the States; or\n\n(b) within a Territory, between two Territories or between a State and a Territory;\n\n“visiting government aircraft” means an aircraft that is owned or operated by the government of a country other than Australia, or of a part of such a country, and is in Australia or is engaged in a flight that commenced in Australia or a flight that commenced outside Australia and ends, or is intended to end, in Australia.\n\n(2) For the purposes of references in this Act to a flight of an aircraft—\n\n(a) a flight of an aircraft shall be taken to be a flight between two parts of Australia where the flight commences in either of those parts and ends, or is, at the commencement of the flight, intended to end, in the other of those parts; and\n\n(b) a flight of an aircraft shall be taken to be a flight within a Territory where the flight commences in that Territory and ends, or is, at the commencement of the flight, intended to end, in that Territory, whether or not the aircraft goes, or may or will go, in the course of the flight, outside the Territory.\n\n(3) In this Act, the expressions “in flight” and “in service”, in relation to an aircraft, have the same meanings as they have in the Convention by virtue of Article 2 of the Convention.\n\n(4) A reference in this Act to Australia or a part of Australia shall be read as including a reference to the territorial waters of Australia or to the territorial waters of Australia adjacent to that part of Australia, as the case may be.\n\nExtension of Act to Territories.\n\n4. This Act extends to every Territory.\n\nExtraterritorial operation of Act.\n\n5. This Act extends, except so far as the contrary intention appears—\n\n(a) to acts, omissions, matters and things outside Australia, whether or not in or over a foreign country; and\n\n(b) to all persons, irrespective of their nationality or citizenship.\n\nApproval of ratification of Convention.\n\n6. Approval is given to ratification by Australia of the Convention.\n\n  \n\nOffences.\n\n7. (1) A person is. guilty of an offence against this Act—\n\n(a) if he unlawfully and intentionally—\n\n(i) performs an act of violence against a person on board an aircraft in flight if that act is likely to endanger the safety of that aircraft;\n\n(ii) destroys an aircraft in service or causes damage to such an aircraft which renders it incapable of flight or which is likely to endanger its safety in flight;\n\n(iii) places or causes to be placed on an aircraft in service, by any means whatsoever, a device or substance which is likely to destroy that aircraft, or to cause damage to it which renders it incapable of flight, or to cause damage to it which is likely to endanger its safety in flight;\n\n(iv) destroys or damages air navigation facilities or interferes with their operation, if any such act is likely to endanger the safety of aircraft in flight; or\n\n(v) communicates information which he knows to be false, thereby endangering the safety of an aircraft in flight;\n\n(b) if he attempts to do, unlawfully and intentionally, an act referred to in paragraph (a); or\n\n(c) if he is an accomplice of a person who does or attempts to do, unlawfully and intentionally, an act referred to in paragraph (a),\n\nand the circumstances specified in any paragraph of sub-section (2) are applicable, whether or not another of those paragraphs is applicable.\n\n(2) The circumstances referred to in sub-section (1) are—\n\n(a) where the Convention requires Australia to make the conduct punishable;\n\n(b) except in the case of conduct to which paragraph (c) of this subsection applies, where the aircraft concerned is-\n\n(i) an aircraft in service in the course of, or in connexion with, a prescribed flight;\n\n(ii) an Australian Government aircraft; or\n\n(iii) a visiting government aircraft;\n\n(c) in the case of conduct (including conduct specified in paragraph (1) (b) or (c)) that relates to air navigation facilities—the air navigation facilities are used in connexion with prescribed flights, flights of Australian Government aircraft or flights of visiting government aircraft; or\n\n(d) where the conduct is conduct of an Australian citizen outside Australia.\n\n  \n\n(3) The penalty for an offence against this Act is—\n\n(a) in the case of conduct specified in either of sub-paragraphs (1)(a)(i) and (ii) or conduct specified in paragraph (1)(b) or (c) that relates to conduct specified in either of those sub-paragraphs—imprisonment for a term not exceeding fourteen years; or\n\n(b) in the case of conduct specified in any of sub-paragraphs (1)(a)(iii), (iv) and (v), or conduct specified in paragraph (1)(b) or (c) that relates to conduct specified in any of those sub-paragraphs imprisonment for a term not exceeding seven years,\n\n(4) A person is not liable to be tried for an offence against this Act by virtue of paragraph (2)(a) unless the offence is one over which Australia is required by Article 5 of the Convention to establish its jurisdiction.\n\nTaking of offenders into custody.\n\n8. (1) Where an authorized person has reasonable grounds to suspect that a person has committed an act by reason of which Article 6 of the Convention applies to Australia in respect of him, or is otherwise guilty of an offence against this Act, the authorized person–\n\n(a) may cause that person to be taken into custody; and\n\n(b) shall cause a person so taken into custody–\n\n(i) to be brought before a Magistrate as soon as practicable, to be dealt with in accordance with section 12; and\n\n(ii) to be held in custody until he can be so brought before a Magistrate.\n\n(2) Nothing in this section prevents the arrest of a person for an offence against this Act in accordance with the law relating to the arrest of offenders against the laws of the Commonwealth.\n\n(3) Where a person is required to be brought before a Magistrate in accordance with this Act and, but for this sub-section, that person would also be required to be brought before a Magistrate in accordance with the Civil Aviation (Offenders on International Aircraft) Act 1970, he shall be brought before a Magistrate in accordance with this Act only and shall be dealt with accordingly.\n\nArrest of offenders, &c.\n\n9. (1) This section applies to–\n\n(a) an Australian aircraft, whether in or outside Australia; or\n\n(b) any other aircraft, while it is in Australia or engaged in a prescribed flight.\n\n(2) The person in command of an aircraft to which this section applies may, with such assistance as is necessary, arrest without warrant a person whom he finds committing, or reasonably suspects of having committed, an offence against this Act on board the aircraft, and that\n\n  \n\nperson in command or a person authorized by him may hold the person so arrested in custody until he can be taken into other custody in accordance with section 8 or brought before a Justice of the Peace or other proper authority to be dealt with in accordance with law.\n\n(3) The person in command of an aircraft to which this section applies may, where he considers it necessary so to do in order to prevent an offence against this Act on board the aircraft, with such assistance as he thinks necessary—\n\n(a) place a person who is on board the aircraft under restraint or in custody and keep him under restraint or in custody until the next landing of the aircraft; and\n\n(b) remove a person from the aircraft at any place at which the aircraft is on the ground.\n\n(4) Nothing in this section prevents the arrest of a person in accordance with any other law.\n\nPerson who escapes may be apprehended.\n\n10. If a person who is in custody under this Act in a State or Territory escapes from that custody, he may be apprehended in the same manner as a person may, under the law of that State or Territory, be apprehended upon an escape from lawful custody, and may be returned to the custody from which he escaped.\n\nHolding of preliminary inquiry.\n\n11. (1) Where a person is taken into custody in accordance with section 8, or has been arrested on a charge of a Convention offence, the Minister or an authorized person may, if he considers that an inquiry of the kind authorized by this section is appropriate to the circumstances, by notice in writing, authorize a Magistrate to hold an inquiry into the facts relating to the alleged offence.\n\n(2) Upon receipt of the notice, the Magistrate shall–\n\n(a) take the evidence of each witness appearing before him to give evidence in the inquiry in like manner as if the witness were giving evidence on a charge against a person for an indictable offence against the law in force in the State or Territory of which he is a Magistrate;\n\n(b) cause a record in writing to be made of the evidence and certify at the end of the record that the evidence was taken by him; and\n\n(c) cause the record so certified to be sent to the Attorney-General.\n\n(3) The evidence of such a witness may be taken in the presence or absence of the person taken into custody or charged with the offence and the certificate by the Magistrate under sub-section (2) shall state whether that person was present or absent when the evidence was taken.\n\n(4) The evidence shall not be taken in the absence of the person unless the Magistrate is satisfied that there is good reason why that person cannot be present or should not be permitted to be present or that that person has declined to be present.\n\n  \n\n(5) The Minister or authorized person authorizing an inquiry in accordance with this section may, in appropriate circumstances, direct that the inquiry in accordance with this section and an inquiry that is or has been authorized (whether by him or by another person) in accordance with section 10 of the Civil Aviation (Offenders on International Aircraft) Act 1970 shall be conducted as the one inquiry.\n\nProceedings before Magistrate.\n\n12. (1) Where—\n\n(a) a person is brought or appears before a Magistrate in accordance with section 8 or on the expiration of a period of remand fixed under sub-section (2) or in pursuance of a warrant issued under sub-section (4); and\n\n(b) there is produced to the Magistrate a warrant for the apprehension of the person for the purposes of criminal or extradition proceedings in connexion with an offence,\n\nthe Magistrate shall make such order as is appropriate to facilitate the execution of the warrant.\n\n(2) Where, in the circumstances referred to in paragraph (1)(a), a warrant referred to in paragraph (1)(b) is not produced to the Magistrate, the Magistrate shall—\n\n(a) if he is satisfied that further time is reasonably required for determining whether criminal or extradition proceedings should be instituted against the person—remand, or further remand, the person, either in custody or on bail, for a period not exceeding seven days; or\n\n(b) if he is not so satisfied—order that the person be released from custody.\n\n(3) Where a Magistrate remands, or further remands, a person in custody under sub-section (2), the person shall, at the expiration of the period of remand or further remand, be brought before that Magistrate or another Magistrate.\n\n(4) If a person who has been remanded on bail under sub-section (2) does not appear before a Magistrate at the time and place mentioned in the recognizance entered into by him on being granted bail, a Magistrate may issue a warrant for the apprehension of the person and for bringing him before a Magistrate.\n\nRelease of person remanded in custody.\n\n13. (1) Where a person remanded under sub-section 12(2) is in custody under that remand at the expiration of two months after—\n\n(a) the date of the order of remand by virtue of which his period of custody on remand commenced; or\n\n(b) if an application for a writ of habeas corpus has been made by the person—the date of the decision of the court to which the\n\n  \n\napplication was made or, where an appeal has been brought from that decision to another court, the date of the decision of the other court,\n\nwhichever is the later, the Supreme Court of the State or Territory in which the person is held in custody, upon application made to it by the person and upon proof that reasonable notice of the making of the application has been given to the Attorney-General, shall, unless reasonable cause is shown for the delay, order that the person be released from custody.\n\n(2) The Supreme Court of each State is invested with federal jurisdiction, and jurisdiction is conferred upon the Supreme Court of each Territory, to hear and determine applications under this section.\n\n(3) The jurisdiction of a court for the purposes of this section may be exercised by the court constituted by a single judge.\n\nConditions of custody on remand.\n\n14. The laws in force in a State or Territory with respect to—\n\n(a) the conditions under which persons charged with offences against the law of that State or Territory are held in custody on remand;\n\n(b) the treatment of such persons while so held in custody; and\n\n(c) the transfer of such persons from one prison or other place of confinement to another,\n\napply, so far as they are capable of application, in relation to persons who are held in custody on remand, in accordance with an order under subsection 12(2), in the prisons or other places of confinement of the State or Territory.\n\nCertain documents admitted in evidence.\n\n15. (1) This section applies to proceedings—\n\n(a) under section 12;\n\n(b) in respect of an offence against this Act, the Crimes (Aircraft) Act 1963 or the Crimes (Hijacking of Aircraft) Act 1972;\n\n(c) under the Extradition (Commonwealth Countries) Act 1966-1973; or\n\n(d) under the Extradition (Foreign States) Act 1966-1973.\n\n(2) A document certified by the Attorney-General to be a record of evidence sent to him under sub-section 11 (2) is admissible in evidence in proceedings to which this section applies and, when admitted, the evidence recorded in it is evidence in the proceedings.\n\n(3) In proceedings in respect of an offence against this Act or another Act referred to in paragraph (1)(b), the Magistrate or court hearing the proceedings shall not admit in evidence a document referred to in subsection (2), or a part of such a document, unless it appears to the Magistrate or court that, having regard to all the circumstances, it would be contrary to the interests of justice not to do so.\n\n  \n\nJurisdiction of courts\n\n16. (1) A provision of the Judiciary Act 1903-1969 by which a court of a State is invested with jurisdiction with respect to offences against the laws of the Commonwealth has effect, in relation to offences against this Act, as if that jurisdiction were expressed to be so invested without limitation as to locality, other than the limitation required by section 80 of the Constitution.\n\n(2) Subject to section 80 of the Constitution, a court of a Territory has the like jurisdiction in respect of an offence against this Act committed outside the Territory on an aircraft that lands in the Territory with the alleged offender on board as it would have if the offence had been committed in the Territory.\n\n(3) The trial on indictment of an offence against this Act not committed within a State may be held by a court of competent jurisdiction at any place where the court may sit.\n\nProsecutions.\n\n17. (1) Proceedings for the commitment of a person for trial on indictment for an offence against this Act, shall not be instituted except with the consent in writing of the Attorney-General or a person authorized by the Attorney-General, by writing under his hand, to give such consents.\n\n(2) Notwithstanding that a consent has not been given in relation to the offence in accordance with sub-section (1)—\n\n(a) a person may be charged with an offence against this Act;\n\n(b) a person may be arrested for such an offence, and a warrant for such an arrest may be issued and executed; and\n\n(c) a person so charged may be remanded in custody or on bail,\n\nbut no further step in proceedings of a kind referred to in that sub-section shall be taken in relation to the offence until such a consent has been given.\n\n(3) Nothing in sub-section (2) shall prevent the discharging of the accused if proceedings are not continued within a reasonable time.\n\nProvision of relation to venue.\n\n18. (1) Where, in the trial on indictment in a court of a State or Territory of an offence committed on an aircraft in flight, an act constituting in whole or in part the offence charged is proved, it shall be presumed, unless the evidence shows the contrary, that that act did not take place in another part of Australia, being a State.\n\n(2) In a prosecution for an offence against this Act committed on an aircraft in flight, if the information, complaint or indictment specifies the flight in which the aircraft was engaged, it is not necessary for the information, complaint or indictment to state the part of Australia or other place at which the offence was committed.\n\n  \n\nChange of venue.\n\n19. (1.) Where, at any time after the presentation in a court of a State or Territory of an indictment for an offence against this Act committed on an aircraft in flight and before the jury has returned its verdict—\n\n(a) the defendant objects to the trial on the ground that the offence, if committed, was committed in another part of Australia, being a State; and\n\n(b) the Judge is satisfied that the offence, if committed, was committed in that other part of Australia,\n\nthe Judge shall forthwith order that the proceedings on the indictment be discontinued and, if the jury has been empanelled, that the jury be discharged, and that the defendant appear before that court or another court of the first-mentioned State or Territory at a specified time, not later than twenty-eight days after the date on which the order is made, to be dealt with in accordance with this section.\n\n(2) Where a Judge makes an order under sub-section (1), he may also—\n\n(a) order that the defendant be kept in such custody as is specified in the order; or\n\n(b) admit the defendant to bail, on such recognizances as the Judge thinks fit.\n\n(3) If, before the time at which the defendant is to appear before a court, the Attorney-General notifies that court that he does not intend to file an indictment against the defendant in a court of another part of Australia, the first-mentioned court shall, as soon as practicable after being so notified, make an order–\n\n(a) discharging the defendant from his obligation to appear before that court at that time; and\n\n(b) directing-\n\n(i) if the defendant is held in custody—that he be released; or\n\n(ii) if he has been admitted to bail—that the recognizances upon which he was admitted to bail be discharged.\n\n(4) If, at or before the time at which the defendant is to appear before a court, the Attorney-General notifies that court that he has filed an indictment against the defendant in a court of another part of Australia, the first-mentioned court shall—\n\n(a) if the defendant is in custody—forthwith; or\n\n(b) in any other case—as soon as practicable after the time at which the defendant is to appear before that court,\n\nmake an order directing that the defendant be taken, as soon as practicable, in the custody of such person as it directs, to the part of Australia in which the indictment was filed and there be delivered to the custody of a person having authority to arrest him, and may make such further orders as it thinks necessary for facilitating the carrying into effect of the first-mentioned order.\n\n  \n\n(5) If—\n\n(a) the Attorney-General—\n\n(i) does not, before the time at which the defendant is to appear before a court, notify that court that he does not intend to file an indictment against the defendant in a court of another part of Australia; and\n\n(ii) does not, at or before that time, notify the first-mentioned court that he has filed such an indictment; and\n\n(b) the defendant is in custody,\n\nthe first-mentioned court shall, at that time, make an order directing that he be released.\n\n(6) Where an order has been made under sub-section (1) in relation to an indictment, the proceedings on that indictment do not, and that order does not, prevent or prejudice any other indictment, or any information, against the defendant, whether on the same charge or on any other charge.\n\n(7) The jurisdiction of a court under sub-section (3), (4) or (5) may be exercised by the court constituted by a single judge or Magistrate.\n\nOperation of other laws.\n\n20. (1) Except as provided by this section, this Act is not intended to exclude or limit the operation of any other law of the Commonwealth or of a State or Territory.\n\n(2) Where an act or omission of a person is both an offence against this Act and an offence against another Act or against a law of a State or Territory and that person is convicted of either of those offences, he is not liable to be convicted of the other of those offences.\n\n(3) Where a person has been convicted of an offence in respect of an act or omission under the law of a country outside Australia, he is not liable to be convicted of an offence against this Act in respect of that act or omission.\n\nArrangement with Governor of State.\n\n21. (1) The Governor-General may arrange with the Governor of a State for the performance by all or any of the persons who, from time to time, hold office as Chief, Stipendiary, Police, Resident or Special Magistrates of that State of the functions of a Magistrate under this Act.\n\n(2) A copy of each arrangement made under this section shall be published in the Gazette.\n\nEvidence of certain matters.\n\n22. (1) All courts shall take judicial notice of the fact that the Convention entered into force in accordance with paragraph 3 of Article 15 of the Convention on 28th January, 1973\n\n(2) The Minister may, by instrument published in the Gazette, declare—\n\n(a) that the Convention entered into force for a specified country on a specified date; or\n\n  \n\n(b) that a specified country has denounced the Convention and that the denunciation took effect on a specified date.\n\n(3) The country specified in an instrument under sub-section (2) may be Australia.\n\n(4) Subject to sub-section (5), production of a copy of the Gazette containing an instrument purporting to be an instrument making a declaration in accordance with paragraph (2)(a) is evidence of the matter declared by the instrument and that the specified country has not denounced the Convention.\n\n(5) Production of a copy of the Gazette containing an instrument purporting to be an instrument making a declaration in accordance with paragraph (2)(b) is evidence of the matter declared.\n\n(6) A certificate signed by the Minister and certifying as to matters concerning a notice given to the International Civil Aviation Organization, and communicated to Australia, in accordance with Article 9 of the Convention, is evidence of the matters certified and that the notice was duly given to that organization.\n\nRegulations.\n\n23. The Governor-General may make regulations, not inconsistent with this Act, prescribing all matters that by this Act are required or permitted to be prescribed, or that are necessary or convenient to be prescribed for carrying out or giving effect to this Act or the Convention and, in particular, making provision for or in relation to—\n\n(a) the summoning of witnesses, the production of documents, the taking of evidence on oath or affirmation and the payment of expenses of witnesses in proceedings before Magistrates under this Act or any other matter of practice or procedure in connexion with such proceedings;\n\n(b) the protection and immunity of Magistrates, barristers and solicitors and witnesses in connexion with such proceedings; and\n\n(c) Penalties not exceeding a fine of Two hundred dollars for offences against the regulations\n\n\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\n\n  \n\nSection 3\n\nSCHEDULE\n\nCONVENTION FOR THE SUPPRESSION OF UNLAWFUL ACTS AGAINST\n\nTHE SAFETY OF CIVIL AVIATION\n\nThe States Parties to this Convention\n\nCONSIDERING that unlawful acts against the safety of civil aviation jeopardize the safety of persons and property, seriously affect the operation of air services, and undermine the confidence of the peoples of the world in the safety of civil aviation;\n\nCONSIDERING that the occurence of such acts is a matter of grave concern;\n\nCONSIDERING that, for the purpose of deterring such acts, there is an urgent need to provide appropriate measures for punishment of offenders;\n\nHave agreed as follows:\n\nArticle 1\n\n1. Any person commits an offence if he unlawfully and intentionally:\n\n(a) performs an act of violence against a person on board an aircraft in flight if that act is likely to endanger the safety of that aircraft; or\n\n(b) destroys an aircraft in service or causes damage to such an aircraft which renders it incapable of flight or which is likely to endanger its safety in flight; or\n\n(c) places or causes to be placed on an aircraft in service, by any means whatsoever, a device or substance which is likely to destroy that aircraft, or to cause damage to it which renders it incapable of flight, or to cause damage to it which is likely to endanger its safety in flight; or\n\n(d) destroys or damages air navigation facilities or interferes with their operation, if any such act is likely to endanger the safety of aircraft in flight; or\n\n(e) communicates information which he knows to be false, thereby endangering the safety of an aircraft in flight.\n\n2. Any person also commits an offence if he:\n\n(a) attempts to commit any of the offences mentioned in paragraph 1 of this Article; or\n\n(b) is an accomplice of a person who commits or attempts to commit any such offence.\n\nArticle 2\n\nFor the purposes of this Convention:\n\n(a) an aircraft is considered 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; in the case of a forced landing, the flight shall be deemed to continue until the competent authorities take over the responsibility for the aircraft and for persons and property on board;\n\n(b) an aircraft is considered to be in service from the beginning of the preflight preparation of the aircraft by ground personnel or by the crew for a specific flight until twenty-four hours after any landing; the period of service shall, in any event, extend for the entire period during which the aircraft is in flight as defined in paragraph (a) of this Article.\n\nArticle 3\n\nEach Contracting State undertakes to make the offences mentioned in Article 1 punishable by severe penalties.\n\nArticle 4\n\n1. This Convention shall not apply to aircraft used in military, customs or police services.\n\n2. In the cases contemplated in subparagraphs (a), (b), (c) and (e) of paragraph 1 of Article 1, this Convention shall apply, irrespective of whether the aircraft is engaged in an international or domestic flight, only if:\n\n(a) the place of take-off or landing, actual or intended, of the aircraft is situated outside the territory of the State of registration of that aircraft; or\n\n(b) the offence is committed in the territory of a State other than the State of registration of the aircraft.\n\n  \n\nSCHEDULE-continued\n\n3. Notwithstanding paragraph 2 of this Article, in the cases contemplated in subparagraphs (a), (b), (c) and (e) of paragraph 1 of Article 1, this Convention shall also apply if the offender or the alleged offender is found in the territory of a State other than the State of registration of the aircraft.\n\n4. With respect to the States mentioned in Article 9 and in the cases mentioned in subparagraphs (a), (b), (c) and (e) of paragraph 1 of Article 1, this Convention shall not apply if the places referred to in subparagraph (a) of paragraph 2 of this Article are situated within the territory of the same State where that State is one of those referred to in Article 9, unless the offence is committed or the offender or alleged offender is found in the territory of a State other than that State.\n\n5. In the cases contemplated in subparagraph (d) of paragraph 1 of Article 1, this Convention shall apply only if the air navigation facilities are used in international air navigation.\n\n6. The provisions of paragraphs 2, 3, 4 and 5 of this Article shall also apply in the cases contemplated in paragraph 2 of Article 1.\n\nArticle 5\n\n1. Each Contracting State shall take such measures as may be necessary to establish its jurisdiction over the offences in the following cases:\n\n(a) when the offence is committed in the territory of that State;\n\n(b) when the offence is committed against or on board an aircraft registered in that State;\n\n(c) when the aircraft on board which the offence is committed lands in its territory with the alleged offender still on board;\n\n(d) when the offence is committed against or on board an aircraft leased without crew to a lessee who has his principal place of business or, if the lessee has no such place of business, his permanent residence, in that State.\n\n2. Each Contracting State shall likewise take such measures as may be necessary to establish its jurisdiction over the offences mentioned in Article 1, paragraph 1 (a), (b) and (c), and in Article 1, paragraph 2, in so far as that paragraph relates to those offences in the case where the alleged offender is present in its territory and it does not extradite him pursuant to Article 8 to any of the States mentioned in paragraph 1 of this Article.\n\n3. This Convention does not exclude any criminal jurisdiction exercised in accordance with national law.\n\nArticle 6\n\n1. Upon being satisfied that the circumstances so warrant, any Contracting State in the territory of which the offender or the alleged offender is present, shall take him into custody or take other measures to ensure his presence. The custody and other measures shall be as provided in the law of that State but may only be continued for such time as is necessary to enable any criminal or extradition proceedings to be instituted.\n\n2. Such State shall immediately make a preliminary enquiry into the facts.\n\n3. Any person in custody pursuant to paragraph 1 of this Article shall be assisted in communicating immediately with the nearest appropriate representative of the State of which he is a national.\n\n4. When a State, pursuant to this Article, has taken a person into custody, it shall immediately notify the States mentioned in Article 5, paragraph 1, the State of nationality of the detained person and, if it considers it advisable, any other interested States of the fact that such person is in custody and of the circumstances which warrant his detention. The State which makes the preliminary enquiry contemplated in paragraph 2 of this Article shall promptly report its findings to the said States and shall indicate whether it intends to exercise jurisdiction.\n\nArticle 7\n\nThe Contracting State in the territory of which the alleged offender is found shall, if it does not extradite him, be obliged, without exception whatsoever and whether or not the offence was committed in its territory, to submit the case to its competent authorities for the purpose of prosecution. Those authorities shall take their decision in the same manner as in the case of any ordinary offence of a serious nature under the law of that State.\n\nArticle 8\n\n1. The offences shall be deemed to be included as extraditable offences in any extradition treaty existing between Contracting States. Contracting States undertake to include the offences as extraditable offences in every extradition treaty to be concluded between them.\n\n  \n\nSCHEDULE\\-continued\n\n2. If a Contracting State which makes extradition conditional on the existence of a treaty receives a request for extradition from another Contracting State with which it has no extradition treaty, it may at its option consider this Convention as the legal basis for extradition in respect of the offences. Extradition shall be subject to the other conditions provided by the law of the requested State.\n\n3. Contracting States which do not make extradition conditional on the existence of a treaty shall recognize the offences as extraditable offences between themselves subject to the conditions provided by the law of the requested State.\n\n4. Each of the offences shall be treated, for the purpose of extradition between Contracting States, as if it had been committed not only in the place in which it occurred but also in the territories of the States required to establish their jurisdiction in accordance with Article 5, paragraph 1(b), (c) and (d).\n\nArticle 9\n\nThe Contracting States which establish joint air transport operating organizations or international operating agencies, which operate aircraft which are subject to joint or international registration shall, by appropriate means, designate for each aircraft the State among them which\n\nshall exercise the jurisdiction and have the attributes of the State of registration for the purpose of this Convention and shall give notice thereof to the International Civil Aviation Organization which shall communicate the notice to all States Parties to this Convention.\n\nArticle 10\n\n1. Contracting States shall, in accordance with international and national law, endeavour to take all practicable measures for the purpose of preventing the offences mentioned in Article 1.\n\n2. When, due to the commission of one of the offences mentioned in Article 1, a flight has been delayed or interrupted, any Contracting State in whose territory the aircraft or passengers or crew are present shall facilitate the continuation of the journey of the passengers and crew as soon as practicable, and shall without delay return the aircraft and its cargo to the persons lawfully entitled to possession.\n\nArticle 11\n\n1. Contracting States shall afford one another the greatest measure of assistance in connection with criminal proceedings brought in respect of the offences. The law of the State requested shall apply in all cases.\n\n2. The provisions of paragraph 1 of this Article shall not affect obligations under any other treaty, bilateral or multilateral, which governs or will govern, in whole or in part, mutual assistance in criminal matters.\n\nArticle 12\n\nAny Contracting State having reason to believe that one of the offences mentioned in Article 1 will be committed shall, in accordance with its national law, furnish any relevant information in its possession to those States which it believes would be the States mentioned in Article 5, paragraph 1.\n\nArticle 13\n\nEach Contracting State shall in accordance with its national law report to the Council of the International Civil Aviation Organization as promptly as possible any relevant information in its possession concerning:\n\n(a) the circumstances of the offence;\n\n(b) the action taken pursuant to Article 10, paragraph 2;\n\n(c) the measures taken in relation to the offender or the alleged offender and, in particular, the results of any extradition proceedings or other legal proceedings.\n\nArticle 14\n\n1. Any dispute between two or more Contracting States concerning the interpretation or application of this Convention which cannot be settled through negotiation, shall, at the request of one of them, be submitted to arbitration. If within six months from the date of the request for arbitration the Parties are unable to agree on the organization of the arbitration, any one of those Parties may refer the dispute to the International Court of Justice by request in conformity with the Statute of the Court.\n\n  \n\nSCHEDULE\\-continued\n\n2. Each State may at the time of signature or ratification of this Convention or accession thereto, declare that it does not consider itself bound by the preceding paragraph. The other Contracting States shall not be bound by the preceding paragraph with respect to any Contracting State having made such a reservation.\n\n3. Any Contracting State having made a reservation in accordance with the preceding paragraph may at any time withdraw this reservation by notification to the Depositary Governments.\n\nArticle 15\n\n1. This Convention shall be open for signature at Montreal on 23 September 1971, by States participating in the International Conference on Air Law held at Montreal from 8 to 23 September 1971 (hereinafter referred to as the Montreal Conference). After 10 October 1971, the Convention shall be open to all States for signature in Moscow, London and Washington. Any State which does not sign this Convention before its entry into force in accordance with paragraph 3 of this Article may accede to it at any time.\n\n2. This Convention shall be subject to ratification by the signatory States. Instruments of ratification and instruments of accession shall be deposited with the Governments of the Union of Soviet Socialist Republics, the United Kingdom of Great Britain and Northern Ireland, and the United States of America, which are hereby designated the Depositary Governments.\n\n3. This Convention shall enter into force thirty days following the date of the deposit of instruments of ratification by ten States signatory to this Convention which participated in the Montreal Conference.\n\n4. For other States, this Convention shall enter into force on the date of entry into force of this Convention in accordance with paragraph 3 of this Article, or thirty days following the date of deposit of their instruments of ratification or accession, whichever is later.\n\n5. The Depositary Governments shall promptly inform all signatory and acceding States of the date of each signature, the date of deposit of each instrument of ratification or accession, the date of entry into force of this Convention, and other notices.\n\n6. As soon as this Convention comes into force, it shall be registered by the Depositary Governments pursuant to Article 102 of the Charter of the United Nations and pursuant to Article 83 of the Convention on International Civil Aviation (Chicago, 1944).\n\nArticle 16\n\n1. Any Contracting State may denounce this Convention by written notification to the Depositary Governments.\n\n2. Denunciation shall take effect six months following the date on which notification is received by the Depositary Governments.\n\nIN witness whereof the undersigned Plenipotentiaries, being duly authorized thereto by their Governments, have signed this Convention.\n\nDONE at Montreal, this twenty-third day of September, one thousand nine hundred and seventy-one, in three originals, each being drawn up in four authentic texts in the English, French, Russian and Spanish languages.\n\n\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_","sortOrder":0}],"analysis":{"issue_detection":{"absurdities":[{"type":"other","section":"Section 3(1) — definition of 'authority of the Commonwealth'","severity":"medium","reasoning":"In 1973, Qantas was government-owned, so the policy intent is understandable. However, classifying a commercial airline as an 'authority of the Commonwealth' stretches the ordinary meaning of that term beyond recognition. More importantly, the definition of 'Australian Government aircraft' sweeps in all aircraft owned, possessed, or controlled by an 'authority of the Commonwealth', meaning any Qantas aircraft at any time would be an 'Australian Government aircraft'. This brings Qantas flights within the extended jurisdiction in s.7(2)(b)(ii) regardless of whether they are on international or domestic routes — a far broader reach than likely intended, and one that sits in obvious tension with Article 4(1) of the Convention, which expressly excludes military, customs and police service aircraft (the paradigm 'government aircraft') from the Convention's scope. The Act silently conflates commercial and governmental aviation.","confidence":0.82,"description":"Qantas Airways Limited is defined as an 'authority of the Commonwealth', which in turn feeds into the definition of 'Australian Government aircraft' as an aircraft owned by or in the possession/control of an 'authority of the Commonwealth'. This would make Qantas aircraft 'Australian Government aircraft' — a classification normally reserved for state-owned defence and public service aircraft."},{"type":"other","section":"Section 2(2) — commencement of remaining provisions","severity":"low","reasoning":"This is more an awkward drafting quirk than a true impossibility. The retroactive knowledge obligation in s.22(1) is not logically impossible, but it is odd: courts must take judicial notice of a fact relevant to a regime that is not yet operative. In practice this causes no harm, but it reveals a tension in the staged commencement structure — the evidentiary machinery is switched on before the substantive machine it serves.","confidence":0.72,"description":"The remaining provisions shall come into operation on a date fixed by Proclamation, being a date 'not earlier than the date on which the Convention enters into force for Australia'. However, section 22(1) — one of the sections that commences immediately on Royal Assent — requires all courts to take judicial notice that the Convention entered into force on 28 January 1973, which is before the Act even received Royal Assent on 27 May 1973. Courts are therefore required to take judicial notice of a date (the Convention's entry into force) that pre-dates the Act itself, and to do so from the moment of Royal Assent, even though the substantive offence provisions requiring that knowledge are not yet in force."},{"type":"circular_definition","section":"Section 7(4)","severity":"medium","reasoning":"The circularity arises because the existence of the offence under s.7(1) read with s.7(2)(a) depends on whether Australia is 'required' by Article 5 to establish jurisdiction — but whether Australia is so required is itself determined by the facts of the case, including where the offence was committed and who the alleged offender is. A court must apply the Convention to determine whether the Convention applies, creating a logical loop. This is medium severity because it generates genuine procedural complexity and potential for jurisdictional challenge, even though it is ultimately resolvable by close reading of Article 5.","confidence":0.78,"description":"Section 7(4) provides that a person is not liable to be tried for an offence by virtue of paragraph (2)(a) (the Convention-based jurisdiction) unless the offence is one over which Australia is required by Article 5 of the Convention to establish jurisdiction. However, Article 5 of the Convention itself requires Australia to establish jurisdiction in four scenarios. The effect is that s.7(4) creates a filter that requires the court to resolve a question of international treaty interpretation before it can determine its own jurisdiction — a question of fact and law that will frequently be contested and for which no guidance is given in the Act. The provision makes jurisdiction self-referential: you must determine whether Convention jurisdiction exists in order to determine whether the Act's Convention-based jurisdiction applies."},{"type":"circular_definition","section":"Section 3(1) — definition of 'Convention offence'","severity":"medium","reasoning":"The definition of 'Convention offence' is used in ss.11(1) and 15(1)(b) to trigger specific procedural mechanisms. If it cannot be determined at the charging stage whether a given offence is a 'Convention offence' — because that requires resolving whether the Convention 'requires' Australia to act — then prosecutors and Magistrates cannot know which procedural track applies. This is a drafting circularity that creates practical ambiguity, even if ultimately resolvable on the merits.","confidence":0.75,"description":"A 'Convention offence' is defined as an offence against this Act in respect of which 'the circumstances referred to in paragraph 7(2)(a) are applicable'. Paragraph 7(2)(a) in turn refers to 'where the Convention requires Australia to make the conduct punishable'. Whether the Convention so requires depends on Articles 1, 3, 4 and 5 of the Convention. The definition of 'Convention offence' therefore incorporates by reference an unresolved question of treaty law, making the definition indeterminate on its face."},{"type":"self_contradicting","section":"Section 11(5)","severity":"low","reasoning":"There is a mild internal tension: s.8(3) channels the person exclusively into this Act's Magistrate proceedings, but s.11(5) then permits the inquiry (a pre-trial evidence-gathering step) to be merged with the 1970 Act inquiry. This creates ambiguity about which Act's procedural rules govern the merged inquiry, and whether the exclusivity mandated by s.8(3) is undermined by the merger permitted by s.11(5). The severity is low because the two provisions address different stages of the process, but the interaction is not carefully managed.","confidence":0.65,"description":"Section 11(5) allows the Minister or an authorised person to direct that a preliminary inquiry under this Act and an inquiry under the Civil Aviation (Offenders on International Aircraft) Act 1970 'shall be conducted as the one inquiry'. However, section 8(3) separately provides that where a person would be required to be brought before a Magistrate under both this Act and the 1970 Act, they shall only be brought before a Magistrate under this Act. The combined effect is that the procedural track is exclusively this Act (s.8(3)), yet the inquiry can be merged with the 1970 Act inquiry (s.11(5)) — a procedurally anomalous outcome where the hearing is conducted under one Act but the inquiry evidence may be gathered under the merged framework of two."},{"type":"other","section":"Section 18(1) — presumption as to venue","severity":"low","reasoning":"The negative framing of the presumption is logically peculiar. It establishes jurisdiction by exclusion rather than by affirmation. If an aircraft flew over three States, the presumption that the act did not occur in 'another part of Australia, being a State' is unhelpful — there may be multiple other States to be excluded. The provision appears to have been drafted to prevent forum shopping, but the mechanism is clumsy and could leave a court unable to positively assert its venue over the offence without additional evidence.","confidence":0.7,"description":"Section 18(1) creates a presumption that, where an act constituting an offence committed on an aircraft in flight is proved, that act is presumed NOT to have taken place in 'another part of Australia, being a State' — unless the evidence shows otherwise. This is a rebuttable presumption designed to avoid venue disputes, but it is drafted in the negative: it presumes the act did NOT occur in a State, rather than presuming it occurred in the Territory or State where the trial is taking place. This means the presumption tells us where the act was NOT, not where it WAS. A court in one State trying an offence committed on an aircraft cannot, using s.18(1) alone, affirmatively establish its own territorial connection to the offence; it can only rule out a connection to another State."},{"type":"impossible_compliance","section":"Section 9(3)(a) — restraint until 'next landing'","severity":"low","reasoning":"This is less a logical absurdity and more a human rights concern dressed in legislative clothing. The open-ended nature of 'considers it necessary' gives the commander effectively unreviewable power to detain someone for the duration of potentially a very long flight. However, this was a deliberate policy choice common to aviation security legislation of this era, so confidence in flagging it as a true legal absurdity is moderate.","confidence":0.6,"description":"The commander of an aircraft may place a person under restraint 'until the next landing of the aircraft'. If the aircraft is forced to return to its departure airport — or diverts to a closer airport — the 'next landing' could be very brief. More critically, on a very long flight (e.g. trans-Pacific), the commander may need to keep a person restrained for many hours based solely on a unilateral 'consideration' that restraint is necessary. There is no minimum evidence threshold, no independent review mechanism, and the provision contains no safeguard against a commander who miscalculates the need for restraint, leaving the restrained person without recourse until landing."},{"type":"self_contradicting","section":"Article 4(1) of the Convention (Schedule) vs. Section 7 of the Act","severity":"high","reasoning":"This is a genuine structural tension. The Act purports to 'give effect to' the Convention (as stated in its long title) but simultaneously extends the offence regime to defence aircraft, which the Convention explicitly excludes. The long title also says the Act provides for punishment 'in certain circumstances in which that Convention does not apply', which could be read as the intended justification. However, the Act does not clearly distinguish between its 'Convention-implementing' provisions and its 'beyond-the-Convention' provisions — both operate through the same s.7 offence structure and penalty regime. A person charged in connection with a defence aircraft could challenge whether Parliament validly extended the regime in the absence of the Convention's authority, and courts would face difficulty unpicking which head of power supports which application.","confidence":0.85,"description":"Article 4(1) of the Convention expressly provides that the Convention 'shall not apply to aircraft used in military, customs or police services'. However, the Act's definition of 'Australian Government aircraft' in s.3(1) expressly includes 'defence aircraft', and s.7(2)(b)(ii) makes the offence provisions applicable to conduct concerning Australian Government aircraft — which includes defence aircraft. The Act therefore extends the Convention's offence framework to defence aircraft, directly contradicting the Convention's own exclusion."}],"contradictions":[{"severity":"high","section_a":"Section 7(2)(a) — Convention-based jurisdiction","section_b":"Section 7(4) — limitation on Convention-based trial","confidence":0.8,"description":"Section 7(2)(a) provides that an offence is made out where 'the Convention requires Australia to make the conduct punishable', suggesting a broad Convention-based head of jurisdiction. Section 7(4) then restricts this by providing that a person is not liable to be tried under (2)(a) unless the offence is one over which Australia is required by Article 5 to establish jurisdiction. These two provisions use different triggers: (2)(a) refers to the Convention 'requiring punishment' (which invokes Article 3), while (4) refers to Article 5 jurisdiction requirements. Articles 3 and 5 are distinct — Article 3 requires severe penalties generally, while Article 5 sets specific jurisdictional nexuses. An offence may engage Article 3 but fall outside Article 5, creating uncertainty about whether (2)(a) is met but (4) is not, meaning the offence is notionally made out but cannot be tried."},{"severity":"medium","section_a":"Section 8(3) — exclusive Magistrate proceedings under this Act","section_b":"Section 11(5) — merger of inquiries with 1970 Act","confidence":0.68,"description":"Section 8(3) mandates that where a person would be required to appear before a Magistrate under both this Act and the Civil Aviation (Offenders on International Aircraft) Act 1970, they shall appear only under this Act. This creates an exclusive procedural channel. Section 11(5) then permits the Minister to direct that a preliminary inquiry under this Act be conducted together with an inquiry under the 1970 Act as 'the one inquiry'. This creates an internal contradiction: the person must be dealt with exclusively under this Act (s.8(3)) but the inquiry — a formal evidentiary proceeding — can be merged with and conducted partly under the 1970 Act framework (s.11(5)), undermining the exclusivity mandated by s.8(3)."},{"severity":"medium","section_a":"Section 17(1) — consent required before commitment for trial","section_b":"Section 17(3) — discharge if proceedings not continued within reasonable time","confidence":0.73,"description":"Section 17(1) prohibits institution of commitment proceedings without the Attorney-General's written consent. Section 17(2)(c) permits remand in custody or on bail even without that consent. Section 17(3) then provides that nothing in (2) prevents the discharge of the accused if proceedings are not continued within a reasonable time. The contradiction lies in the fact that the time at which 'proceedings' should be 'continued' is undefined — if the Attorney-General withholds consent indefinitely, it is unclear whether the 'reasonable time' clock runs from arrest, charge, or remand, and whether a court can discharge someone the Attorney-General wishes to keep remanded while awaiting a consent decision. This pits executive discretion over consent against judicial authority to discharge."},{"severity":"low","section_a":"Section 20(2) — protection against double conviction","section_b":"Section 20(1) — this Act not intended to exclude other laws","confidence":0.65,"description":"Section 20(1) states the Act is not intended to exclude or limit the operation of any other Commonwealth or State/Territory law. Section 20(2) then directly limits the operation of those other laws by providing that a conviction under this Act bars conviction under another Act or State/Territory law for the same act or omission. Section 20(1) says 'other laws are not excluded', but s.20(2) says 'conviction under one bars conviction under the other' — which is a partial exclusion of the other law's penal consequences. While the two subsections serve different purposes (structural non-exclusion vs. double jeopardy protection), the tension between 'other laws are not limited' and 'but their convictions are barred' creates an internal inconsistency in the policy statement of s.20(1)."},{"severity":"high","section_a":"Section 3(1) — definition of 'Australian Government aircraft' (includes defence aircraft)","section_b":"Convention Schedule, Article 4(1) — Convention does not apply to military aircraft","confidence":0.85,"description":"The Act's definition of 'Australian Government aircraft' expressly includes 'defence aircraft' (i.e. military aircraft), and s.7(2)(b)(ii) makes offences applicable in relation to Australian Government aircraft. The Convention, which the Act purports to implement, expressly excludes military aircraft from its scope in Article 4(1). The Act therefore applies the Convention's offence framework — through the same s.7 provisions — to a class of aircraft the Convention deliberately excluded. While the Act's long title acknowledges it goes beyond the Convention in some circumstances, no provision clearly delineates when s.7 operates as a Convention-implementing provision and when it operates as a domestic extension, making the application to defence aircraft directly contradict the Convention's exclusion."},{"severity":"low","section_a":"Section 13(1) — two-month maximum remand before Supreme Court release order","section_b":"Section 12(2)(a) — Magistrate may remand for up to seven days at a time","confidence":0.6,"description":"Section 12(2)(a) allows a Magistrate to remand a person for periods of up to seven days at a time, with no express limit on the number of remands. Section 13(1) provides a hard outer limit of two months after which the Supreme Court shall order release unless reasonable cause for delay is shown. The tension arises because s.12(2)(a) contains no express requirement that the Magistrate consider the two-month outer limit when granting remands, and repeated seven-day remands could run right up to (or potentially exceed, if poorly managed) the two-month cap without any intermediate review mechanism. The provisions therefore operate on parallel tracks without a coordinating mechanism."}]},"summary":{"complexity_score":7,"scope_assessment":{"changed":false,"description":"The Act remains tightly focused on its original purpose: implementing the 1971 Montreal Convention and extending equivalent protections to domestic flights and Australian citizens not covered by that Convention. The scope has not crept beyond aviation safety offences. The domestic extensions (covering prescribed flights, Australian Government aircraft, and Australian citizens abroad) were clearly anticipated and articulated in the original long title of the Act, so they represent the original intent rather than subsequent expansion."},"complexity_factors":["Dual-layered structure: the Act itself plus a full international Convention reproduced in a Schedule, requiring readers to cross-reference between the two instruments constantly","Heavily conditional offence provisions in section 7: liability depends on a matrix of conduct types (s.7(1)(a)–(c)) combined with any one of four separate circumstance triggers (s.7(2)(a)–(d))","Multiple defined terms (at least 12 in s.3), several of which are themselves cross-referenced to Convention articles (e.g. 'in flight' and 'in service' defined by reference to Article 2)","Extraterritorial jurisdictional rules are complex: coverage depends on aircraft registration, flight type, nationality of offender, and location of landing — mirroring the layered Articles 4 and 5 of the Convention","Procedural chain across multiple sections (ss.8–14) for custody, preliminary inquiry, Magistrate proceedings, bail, remand, habeas corpus, and change of venue — each with its own conditions and time limits","Interaction with at least four other Acts: Civil Aviation (Offenders on International Aircraft) Act 1970, Crimes (Aircraft) Act 1963, Crimes (Hijacking of Aircraft) Act 1972, and both Extradition Acts — requiring practitioners to manage overlapping regimes","Change of venue provisions (s.19) involve a multi-step conditional process with five separate subsections governing what happens depending on whether and when the Attorney-General files an indictment in another jurisdiction","Double jeopardy and foreign conviction protections in s.20 add further conditional logic to prosecution decisions"],"plain_english_summary":"## Crimes (Protection of Aircraft) Act 1973\n\nThis law protects civil aviation (commercial and civilian air travel) from deliberate attacks and sabotage. It implements Australia's obligations under an international agreement called the **Montreal Convention** (formally, the Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation), which was signed in 1971 and brought many countries together to tackle threats to aircraft safety.\n\n### What does it make illegal?\n\nThe Act makes it a serious criminal offence to intentionally:\n- **Attack a person on board a flying aircraft** in a way that could endanger the aircraft\n- **Destroy or seriously damage an aircraft** that is in service (i.e., being prepared for or completing a flight)\n- **Plant a dangerous device or substance on an aircraft** (think bombs or similar)\n- **Destroy or interfere with air navigation facilities** (e.g., control towers, navigation beacons) in a way that could endanger aircraft\n- **Communicate false information** that endangers an aircraft in flight (e.g., fake bomb threats)\n\nAttempting any of these acts, or helping someone else do them, is also a crime.\n\n### Who does it affect?\n\n- **Anyone** — the law applies regardless of nationality or citizenship, and extends beyond Australia's borders\n- It covers **Australian aircraft** anywhere in the world, and **any aircraft** flying within Australia or on domestic routes\n- It also covers **Australian citizens** committing these acts overseas\n- **Military, customs and police aircraft** are excluded (in line with the Convention)\n\n### What are the penalties?\n\n- Up to **14 years' imprisonment** for violence against persons on board or destroying/damaging an aircraft\n- Up to **7 years' imprisonment** for planting devices, interfering with navigation facilities, or communicating false information\n\n### How does the law operate?\n\n- **Authorised officials** (people appointed by the Minister) can detain a suspect and must bring them before a Magistrate quickly\n- The **captain of an aircraft** can arrest or restrain someone on board without a warrant if they suspect an offence\n- A suspect can be held in custody while authorities decide whether to prosecute or seek **extradition** (the process of sending someone to another country to face trial there)\n- The **Attorney-General** must give written approval before a full prosecution can proceed — this prevents politically sensitive international cases being launched without proper oversight\n- **Evidence gathered at a preliminary inquiry** before a Magistrate can be used in later court proceedings\n\n### Why does it matter?\n\nThis law ensures Australia can fulfil its international treaty obligations — meaning Australia must either **prosecute** suspected aviation terrorists found on Australian soil, or **extradite** them to a country with proper jurisdiction. It closes loopholes that might otherwise allow offenders to escape justice by crossing borders. It also extends protection beyond what the Convention strictly requires, covering domestic flights and Australian citizens abroad."},"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":false,"description":"The Act implements the Convention and, as stated in its long title and text, expressly provides for punishment in specified circumstances where the Convention does not apply (s.6; long title). Its scope therefore aligns with that stated purpose: it adopts the Convention’s offences and jurisdictional rules and supplements them with explicitly specified domestic extensions (for example, extraterritorial application generally (s.5) and offences by Australian citizens outside Australia (s.7(2)(d))). The enacted provisions therefore do not depart from the Act’s declared original intent but operationalise the Convention and the additional, specified jurisdictional reach described in the Act."},"complexity_factors":["Cross-reference and incorporation of an external international instrument (the Convention) and application of its Articles within the domestic Act (s.6, Schedule)","Extraterritorial application to acts and persons outside Australia (s.5) and specific extra‑Convention grounds (s.7(2)(d))","Multiple overlapping jurisdictions and venue rules for in‑flight offences requiring coordination between Commonwealth and State/Territory courts (s.16–19)","Detailed arrest, custody and preliminary inquiry regime involving authorised persons, persons in command of aircraft and Magistrates (s.8–13, s.11)","Centralised prosecutorial control via Attorney‑General consent for committal to trial on indictment (s.17)","Discretionary executive appointment and regulation powers (Minister appoints authorised persons (s.3); Governor‑General may make regulations (s.23))","Evidence admissibility and use of certified inquiry records across multiple statutes (s.11, s.15)","Interaction and non‑duplication rules with other Commonwealth, State, Territory and foreign offences and convictions (s.20; Schedule Arts.5–9)","Procedural time limits and remedial rights (remand periods, Supreme Court review for prolonged remand) (s.12–14)"],"plain_english_summary":"# What this law does\n\nThis Act brings into Australian law the international Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation (the Convention) and creates domestic criminal offences, procedures and penalties to give effect to that Convention and to cover certain situations where the Convention itself does not apply (see the Act's purpose and the Schedule). (s.6, Schedule)\n\n- It makes it a crime to do, attempt or be an accomplice to certain acts that threaten the safety of aircraft or air navigation — for example, violence to people on board in flight, destroying or damaging aircraft or air navigation facilities, placing destructive devices on aircraft, or knowingly communicating false information that endangers an aircraft. (s.7(1); Schedule Art.1)\n- The Act sets maximum prison terms for those offences: up to 14 years for the most serious categories (e.g. violent acts or destruction that endangers flight) and up to 7 years for other covered acts (e.g. placing devices, damaging navigation facilities, false communications). (s.7(3))\n\n# Who and what the law covers (who pays / who is affected)\n\n- Persons: the offences apply to all persons regardless of nationality, and the Act expressly reaches acts and omissions outside Australia unless a contrary intention appears. (s.5)\n- Places/flights: offences apply in the specific circumstances set out in the Act, including when the aircraft is in service on a prescribed flight, when it is an Australian Government aircraft, when it is a visiting government aircraft, or when the offender is an Australian citizen outside Australia. (s.7(2)(b), (d); s.3 definition of \"prescribed flight\" and \"Australian aircraft\")\n- Organisations: the Act recognises Commonwealth authorities (including Qantas by definition) and government aircraft in definitions; the law therefore affects government and commercial operators to the extent their aircraft or flights fall within the Act’s definitions. (s.3)\n\nFinancial and operational effects: offenders face imprisonment (s.7(3)); taxpayers and government agencies bear the costs of investigations, custody, remand and prosecutions, and of any co‑operation with international procedures such as extradition (see Schedule Arts.5–9, 11). Airlines and operators face compliance-related effects only to the extent the criminal rules and related procedural requirements (e.g. handing over a person in custody) involve them in investigations or interruptions to service; the Act itself does not create direct civil compliance obligations on carriers beyond the criminal prohibitions and the definitions that determine coverage (s.3, s.7).\n\n# How the law works mechanically (who decides, how enforcement proceeds)\n\n- Ministerial and executive powers: the Minister appoints \"authorized persons\" who may take people into custody under the Act (s.3 definition; s.8). The Governor-General may make regulations for running inquiries and other procedural detail (s.23). The Governor-General can also arrange for State Magistrates to perform functions under the Act (s.21).\n- Arrest and custody: authorized persons may take a suspect into custody where Article 6 of the Convention applies; persons in command of an applicable aircraft may arrest without warrant on board and may restrain or remove persons to prevent offences on board. Arrest powers and custody procedures are set out in detail (s.8, s.9). Copies of evidence records from preliminary inquiries are admissible in later proceedings (s.11, s.15).\n- Magistrates and courts: the Act establishes preliminary inquiry procedures before Magistrates (s.11), remand limits and rights to release (s.12–13), and provides for inter‑State venue and trial arrangements where offences occur in flight (s.16–19). The Attorney‑General’s written consent is required before proceedings for commitment for trial on indictment may be instituted (s.17).\n- Interaction with other law: the Act does not intend to displace other Commonwealth or State/Territory laws except where it provides otherwise; double convictions for the same act are prevented (s.20(1)–(3)).\n\n# The Act’s stated purpose and trade‑offs\n\n- The Act explicitly implements the Convention (s.6, Schedule). It also implements the Convention’s choice-of-jurisdiction and custody duties (Schedule Arts.5–8; Article 6 is reflected in arrest/custody provisions (s.8, s.11)).\n- The Act extends criminal reach beyond mere territorial boundaries by applying to acts and people outside Australia (s.5) and by making offences applicable in defined extraterritorial situations such as offences by Australian citizens abroad (s.7(2)(d)). That extension creates enforcement costs (investigation, custody, extradition or prosecution) for government and can require international cooperation under the Convention (Schedule Arts.8, 11).\n- The Act centralises key decisions: the Minister (appointments) and the Attorney‑General (consent to indict) hold significant discretion (s.3, s.17). That concentrates decision-making about who can detain and whether to prosecute; it also creates a single clearance point for serious prosecutions which affects prosecution timing and resource allocation.\n\n# Implementation and compliance risks, and practical consequences\n\n- Administrative burden and costs: enforcement requires authorised personnel, magistrates to conduct inquiries and courts to try offences; remand timelines and Supreme Court oversight for prolonged remand are prescribed (s.11–14). These are concrete resource demands on courts and corrections.\n- Jurisdictional complexity: the Act cross‑references Convention jurisdiction rules, creates extraterritorial application, and provides special venue rules for in‑flight offences (s.5, s.7(2), s.16–19). This requires coordination between Commonwealth agencies and State/Territory courts and may complicate decisions about where to try a case.\n- Concentration of discretion: ministerial appointment powers (s.3), Attorney‑General consent (s.17) and broad regulation-making by the Governor‑General (s.23) give the executive a significant role in detention, prosecution and procedural detail. The Act also allows State magistrates to be engaged under arrangements (s.21), so implementation depends on intergovernmental arrangements.\n\n# Concrete incentives and likely behaviour changes\n\n- Individuals: the criminal penalties (s.7(3)) create deterrent incentives against the enumerated acts. The Act also permits arrest and immediate restraint on aircraft (s.9), which increases the probability that offenders will be apprehended in real time.\n- Businesses/operators: the Act creates legal risk where flights fall within the Act’s definitions (s.3, s.7(2)(b)). Operators may change operational practices (security measures, cooperation with authorities) to manage that risk, though the Act itself does not impose specific regulatory duties on carriers beyond criminal prohibitions.\n\n# Key legal effects to watch for\n\n- Expanded jurisdiction in specified circumstances (s.5; s.7(2)(d)).\n- Executive discretion over detentions and prosecutions (s.3; s.8; s.17).\n- Procedural regime for preliminary inquiries, remand limits and admissibility of inquiry records (s.11–15).\n\nThis summary describes what the Act does, who it affects and how it operates, and highlights where costs, administrative burdens and executive discretion are concentrated by reference to the relevant sections of the Act."},"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-realtime","completionTokens":3110},"content_quality":"ok","complexity_score":6,"scope_assessment":{"changed":false,"description":"This is the original 1973 enactment. The legislation was explicitly designed from inception to have dual scope: implementing the Montreal Convention while also extending coverage to 'prescribed flights' (interstate and intraterritorial trade and commerce) where the Convention does not apply, as clearly stated in the long title. Therefore, the scope remains faithful to the original intent."},"complexity_factors":["12 defined terms in section 3 including technical concepts like 'prescribed flight', 'Convention offence', and 'visiting government aircraft'","Extraterritorial operation applying to acts outside Australia regardless of nationality (section 5)","Four alternative jurisdictional triggers in section 7(2) determining when offences apply (Convention requirement, prescribed flight, Australian/visiting government aircraft, or Australian citizen overseas)","Incorporation of external treaty definitions for 'in flight' and 'in service' via Article 2 of the Convention","Mandatory Attorney-General consent required before committal for trial (section 17)","Complex venue transfer mechanisms between States when offences committed on aircraft (sections 18-19)","Interaction with multiple other Acts including extradition legislation and earlier aircraft crime statutes (section 15)"],"plain_english_summary":"**What this law does**\n\nThis law makes it a serious crime to attack, sabotage, or threaten aircraft. It puts into Australian law the 1971 Montreal Convention (an international treaty against aircraft terrorism), but also goes further to protect domestic flights that the Convention doesn't cover.\n\n**What is banned**\n\nThe law creates several offences with heavy penalties:\n*   **Violence on board** — Physically attacking someone on a flying aircraft if this could endanger the plane (**up to 14 years prison**)\n*   **Aircraft destruction** — Destroying an aircraft or damaging it so it cannot fly (**up to 14 years**)\n*   **Sabotage** — Planting bombs or dangerous devices on aircraft, or damaging air traffic control facilities (**up to 7 years**)\n*   **False threats** — Communicating information you know is false that endangers an aircraft (**up to 7 years**)\n*   **Attempts and assistance** — Trying to do any of the above, or helping someone else do it\n\n**Who it applies to**\n\nThis law has global reach:\n*   **Australian aircraft anywhere in the world** (including government and Qantas planes)\n*   **Foreign aircraft** while in Australia or flying between Australian States/Territories\n*   **Australian citizens** who commit these crimes overseas\n*   **Everyone else** — regardless of nationality or citizenship\n\n**Special enforcement rules**\n\n*   **Arrest powers** — Aircraft commanders can arrest suspects without a warrant; police have special custody powers\n*   **Attorney-General control** — No one can be sent to trial without the Attorney-General's written permission\n*   **Two-month limit** — People held in custody must be released after two months unless there is good reason for delay\n*   **Change of venue** — If a trial starts in one State but the crime happened in another, the case can be transferred to the correct State"}},"importantCases":[],"_links":{"self":"/api/acts/crimes-protection-of-aircraft-act-1973","history":"/api/acts/crimes-protection-of-aircraft-act-1973/history","analysis":"/api/acts/crimes-protection-of-aircraft-act-1973/analysis","conflicts":"/api/acts/crimes-protection-of-aircraft-act-1973/conflicts","importantCases":"/api/acts/crimes-protection-of-aircraft-act-1973/important-cases","documents":"/api/acts/crimes-protection-of-aircraft-act-1973/documents"}}