Offensive Weapons and Explosive Substances
The charge of Offensive Weapons and Explosive Substances can be found under Offences Against Air or Maritime Safety in the Criminal Code.
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Plain-Language Summary
The charge of Offensive Weapons and Explosive Substances: is a criminal offenceA criminal activity under s.78 (1) of the Criminal CodeA federal act codifying most criminal offences in Canada. This charge applies to anyone who attempts to bring a weapon or explosive device on board an aircraft without the consent of the owner or operator. The definition of a weapon includes anything used to cause harm to others, including replica firearms or toy guns. The maximum penalty for this charge is 14 years in prison. This charge is treated as an indictable offence.
What is the Charge of Offensive Weapons and Explosive Substances?
The charge of Offensive Weapons and Explosive Substances can be found under Offences Against Air or Maritime Safety in the Criminal Code. According to s.78(1) of the Code, you can face this charge if you board a civil aircraftAll aircraft other than those operated by Canadian enforcement agencies with an offensive weapon or any explosive substance without the consentVoluntary agreement to engage in an sexual act of the owner or operator of the aircraft. You can also be charged if consent was granted, but you are not complying with all terms and conditions on which the consent was given. This law applies to everyone except peace officers who are acting in the execution of their duty, such as police and other law enforcement agents.
Section 2 of the Code defines a weapon as anything used, designed to be used, or intended for use in causing death or injury to any person, or for the purpose of threatening or intimidating any person. Examples of weapons include firearms, knives, crossbows, brass knuckles, and Tasers. The Criminal Code and its regulations also list many specific items classified as prohibited or restricted weapons.
Sections 79 to 82 of the Code address related but separate offences involving explosive substances. Those provisions do not require any connection to an aircraft and are prosecuted independently of s.78. One example is s.82, which makes it an offence to possess an explosive substance without lawful excuse even outside any aviation context.
What is Needed to Convict
The Crown attorney needs to prove beyond a reasonable doubtThe high standard the Crown must meet to prove guilt. that you intentionally boarded an aircraft carrying a weapon or explosive device that could be used to harm others or damage the plane and that you had criminal intent. It does not matter if the airplane was in Canadian territory at the time of your arrest, as international conventions deem the laws of the country the craft is registered in apply to the airspace it is in.
Treated as an Indictable Offence
The charge of bringing offensive weapons and explosive substances on board an aircraft is an indictable offenceA more serious type of Canadian criminal offence.. You face imprisonment if convicted.
Penalty for Offensive Weapons and Explosive Substances
The charge under s.78 carries a maximum penalty of 14 years in prison. There is no minimum sentence.
Sections 79 to 82 of the Criminal Code create related but separate explosive-substance offences that are not specific to aircraft. Those provisions cover the duty of care in handling explosives (s.79), breach of that duty (s.80), using explosives to cause harm or damage (s.81), and simple possessionHaving knowledge and control of something — not only physically holding it, but also an item kept somewhere else that you know about and control. of an explosive substance without lawful excuse (s.82). Because those offences are distinct and stand independently of s.78, the maximum penalties differ, and some carry a maximum of life imprisonment. If you are facing charges under any of those sections, the penalty range will depend on the specific provision charged.
What the Crown Must Prove
To get a conviction, the Crown must prove every part of the offence beyond a reasonable doubt.
Section
Weapon or explosive taken aboard aircraft (s.78)
The accused (other than a peace officer executing their duty) took an offensive weapon or an explosive substance on board a civil aircraft.
Absence of valid consent (s.78)
This was done without the consent of the aircraft's owner/operator (or an authorized person), OR consent was given but the accused did not comply with all of its terms and conditions.
Aircraft is a 'civil aircraft' (s.78(2))
The aircraft was not one operated by the Canadian Forces, a Canadian police force, or persons enforcing the Customs Act or Excise Act/Excise Act, 2001.
Legal duty of care and its breach (ss.79-80)
The accused had an explosive substance in their possession or under their care or control (creating a legal duty under s.79 to use reasonable care to prevent bodily harm, death, or property damage), and failed without lawful excuse to perform that duty, resulting in an explosion (s.80).
Intentional use of explosives or dangerous substances (s.81)
The accused did an act with intent to cause an explosion likely to cause serious bodily harm/death or serious property damage; or, with intent to harm a person, caused an explosion, sent/delivered a dangerous substance, or threw a corrosive fluid or dangerous substance at a person; or, without lawful excuse and with intent to destroy/damage property, placed or threw an explosive substance; or made or possessed an explosive substance intending to endanger life or cause serious property damage (or to enable another to do so).
Possession of an explosive without lawful excuse (s.82)
The accused made, possessed, or had care or control of an explosive substance without a lawful excuse (aggravated under s.82(2) if for the benefit of, at the direction of, or in association with a criminal organization).
A proof rule (a presumption) is a rule about evidence. It does not mean the person is automatically guilty. It means the court may treat one fact as evidence of another fact unless there is evidence pointing the other way.
Possible Penalties
These are maximum sentences. Actual sentences depend on the facts, criminal history, and any mitigating or aggravating circumstances.
Taking an offensive weapon or explosive substance on board a civil aircraft — s. 78
IndictableNo mandatory minimum applies.
Breach of the s. 79 duty of care with an explosive, causing death — s. 80(a)
IndictableNo mandatory minimum applies.
Breach of the s. 79 duty of care with an explosive, causing bodily harm or property damage — s. 80(b)
IndictableNo mandatory minimum applies.
Using an explosive with intent to cause serious bodily harm or death, or serious property damage — s. 81(2)(a)
IndictableNo mandatory minimum applies.
Doing anything else prohibited by s. 81(1) with an explosive — s. 81(2)(b)
IndictableNo mandatory minimum applies.
Possession of an explosive substance without lawful excuse — s. 82(1)
HybridNo mandatory minimum applies. On summary conviction, the general s. 787(1) default applies: a fine of up to $5,000, imprisonment for up to two years less a day, or both.
Possession of an explosive substance for a criminal organization — s. 82(2)
IndictableNo mandatory minimum applies.
What these words mean
- Indictable
- The more serious way to prosecute an offence. It can carry higher maximum penalties.
- Summary conviction
- The less serious, usually faster way to prosecute an offence, with lower maximum penalties.
- Hybrid
- An offence the Crown can prosecute either way — by indictment or by summary conviction.
- Summary only
- Summary-only offences are prosecuted by summary conviction. The Criminal Code sets the maximum penalty in the specific offence section.
- Crown election
- The Crown prosecutor’s choice of which way to proceed on a hybrid offence.
Possible Defences and Legal Issues
This page covers more than one section. Possible defences and legal issues are set out by section below.
Offensive Weapons or Explosives on an Aircraft — s.78
Section 78 does not apply to a peace officer acting in the execution of duty — the section excludes anyone "other than a peace officer engaged in the execution of his duty". For everyone else, the offence turns on consent. It applies where a person takes an offensive weapon or explosive substance onto a civil aircraft "without the consent of the owner or operator of the aircraft", or where consent was given but the person failed to comply "with all terms and conditions on which the consent was given". This means valid consent from the aircraft's owner or operator — and compliance with any conditions attached to it — may matter, but only if it covers that item and that conduct. The Crown still has to prove the parts of the offence beyond a reasonable doubt.
Breach of Duty of Care for Explosives — s.80
Section 80 applies when a person who is under a legal duty to take reasonable care with an explosive substance "fails without lawful excuse to perform that duty". If there is evidence capable of raising a lawful excuse, the Crown must prove beyond a reasonable doubt that the person failed to perform that duty without lawful excuse. What counts as a lawful excuse depends on the facts and the law.
Using Explosives — s.81(1)(a), (b) and (d)
Section 81 does not list a special defence in the Criminal Code for most of what it covers. The Crown still has to prove the parts of the offence. Depending on the branch charged, this may mean proving that the person acted with intent to cause an explosion likely to cause serious bodily harm or death or serious property damage, with intent to cause bodily harm using an explosive or other dangerous substance, or that the person made or possessed an explosive substance intending to endanger life or cause serious property damage, or to enable another person to do so.
Possible issues may still depend on the facts, the evidence, and whether the Crown can prove each part of the offence. This is general legal information, not legal advice.
Using Explosives to Damage Property — s.81(1)(c)
Section 81 treats one branch differently. Placing or throwing an explosive substance "with intent to destroy or damage property without lawful excuse" carries its own lawful-excuse limit. If there is evidence capable of raising a lawful excuse, the Crown must prove beyond a reasonable doubt that the person acted without lawful excuse. What counts as a lawful excuse depends on the facts and the law.
Possession of an Explosive Substance — s.82
Section 82 applies "without lawful excuse" — both simple possession under s.82(1) and possession connected to a criminal organization under s.82(2) use the same limit. If there is evidence capable of raising a lawful excuse, the Crown must prove beyond a reasonable doubt that the person made or possessed the explosive substance without lawful excuse. What counts as a lawful excuse depends on the facts and the law.
Application / Scope
What Qualifies as a Civil Aircraft — s.78
Section 78 only applies to a civil aircraft. The Code defines that term to mean "all aircraft other than aircraft operated by the Canadian Forces, a police force in Canada or persons engaged in the administration or enforcement of the Customs Act, the Excise Act or the Excise Act, 2001". If the aircraft involved falls outside that definition, this section does not apply.
Common Legal Terms
Terms marked with a dotted underline in the article above are defined here and available in the full site glossary.
- Beyond a reasonable doubt Glossary entry →
- The high standard the Crown must meet to prove guilt.
- Civil aircraft Glossary entry →
- All aircraft other than those operated by Canadian enforcement agencies
- Consent Glossary entry →
- Voluntary agreement to engage in an sexual act
- Indictable offence Glossary entry →
- A more serious type of Canadian criminal offence.
- Possession Glossary entry →
- Having knowledge and control of something — not only physically holding it, but also an item kept somewhere else that you know about and control.
Legal sources
The official statute section(s) this page is based on. Always confirm against the official source before relying on it.
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Criminal Code s. s. 78 Offensive weapons and explosive substances (civil aircraft)Source current to: 2026-05-26View official source ↗
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Criminal Code s. s. 79 Duty of care re explosiveSource current to: 2026-05-26View official source ↗
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Criminal Code s. s. 80 Breach of dutySource current to: 2026-05-26View official source ↗
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Criminal Code s. s. 81 Using explosivesSource current to: 2026-05-26View official source ↗
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Criminal Code s. s. 82 Possession of explosiveSource current to: 2026-05-26View official source ↗
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Criminal Code s. s. 787 General summary conviction penalty (default fallback)Source current to: 2026-05-26View official source ↗
Government References
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General legal information only. Not legal advice. We do our best to keep this page accurate and up to date, but criminal law can change and every case depends on its facts. Check the review date and consult the Criminal Code or a criminal defence lawyer before relying on this information.
About this page
Criminal Code Help explains selected Criminal Code offences and related legal concepts in plain language. The goal is to help readers understand the general meaning of the law without having to read the full statutory text.
This page is a simplified summary. It does not include every exception, definition, court interpretation, evidentiary issue, Charter issue, sentencing factor, or procedural rule that may apply in a real case.
Legal information, not legal advice
This page is general legal information only. It is not legal advice and should not be relied on as advice about any specific charge, investigation, court file, or personal situation.
Possible defences and legal issues depend on the facts, the evidence, the exact charge, current Canadian law, and the province or territory where the case is being handled. If you are facing a criminal charge or researching a real legal problem, speak with a criminal defence lawyer in your province or territory.