Transport of Dangerous Goods by Air — Page 220, Lesson 321

I want to walk you through the start of the Transport of Dangerous Goods by Air chapter. This is a critical area for any professional pilot because it governs how we handle materials that could threaten the aircraft, its occupants, or property on the ground. Let's begin with the foundational document: ICAO Annex 18. This annex details the international Standards and Recommended Practices—the global rules—for carrying articles or substances that are capable of posing a significant risk to health, safety, or property when transported by air. The key point here is that operators are not permitted to transport dangerous goods unless they have been specifically approved by the Authority—that's the national civil aviation authority. If an operator is eligible to carry dangerous goods, that eligibility will be highlighted in their Air Operator's Certificate, or AOC. So, if you ever look at an AOC, you'll see whether that operator is approved for dangerous goods carriage. Now, the excerpt gives us a set of formal definitions. Let's go through each one carefully, because these terms will appear throughout your training and operations. First, Cargo Aircraft. This is defined as any aircraft, other than a passenger aircraft, which carries goods or property. So, if it's not a passenger aircraft and it's carrying cargo, it's a cargo aircraft. Simple, but important because different rules apply to cargo-only flights. Next, Consignment. This refers to one or more packages of dangerous cargo from one shipper, at one time and at one address, in one lot, moving to one consignee at one destination address. So, it's a single shipment from one sender to one receiver. Crew Member is defined as a person assigned to duty on an aircraft during flight time, by an operator. That's a broad term covering everyone on duty. Now, the core definition: Dangerous Goods. These are articles or substances which are capable of posing a significant risk to health, safety, or property. That's the exact wording from Annex 18. We then have two very important distinctions: a Dangerous Goods Accident versus a Dangerous Goods Incident. A Dangerous Goods Accident is an occurrence associated with and related to the transport by air of dangerous goods which results in fatal or serious injury to a person, or major property damage. So, the outcome is severe—death, serious injury, or major damage. A Dangerous Goods Incident is different. It's an occurrence other than a dangerous goods accident, related to the transport by air of dangerous goods—and this does not necessarily have to occur on board an aircraft. It results in injury to a person, property damage, fire, breakage, spillage, leakage of fluid or radiation, or other evidence that the integrity of a package has not been maintained. Additionally, any occurrence relating to the transport of dangerous goods which seriously jeopardizes the aircraft or its occupants is also deemed to constitute a dangerous goods incident. So, if the package integrity is compromised—even without a major accident—or if the aircraft or occupants are seriously jeopardized, that's an incident. Next, Exception. This is a provision which excludes a specific item of dangerous goods from the requirements normally applicable to that item. So, some items might be excepted from certain rules under specific conditions. An Exemption is different. It's an authorization issued by an appropriate national Authority providing relief from the provisions of the regulations. So, an exemption is a formal permission granted by the Authority to deviate from the rules. Flammable is defined as the property of a material to ignite if the temperature of the material is raised above the flash point. And the note says it has the same meaning as "inflammable" in English—so don't be confused by the prefix; flammable and inflammable mean the same thing. Finally, Flight Crew Member. This is a licensed crew member charged with duties essential to the operation of an aircraft during flight time. That's you—the pilot. You are a flight crew member, distinguished from other crew members who may not be licensed or whose duties aren't essential to flight operation. Let's take a moment to look at the diagrams available for this section. shows the chapter opening. continues the definitions. And provides a supporting figure. So, to summarise: we have the legal framework from ICAO Annex 18, the requirement for Authority approval and AOC endorsement, and a set of precise definitions that distinguish between accidents, incidents, exceptions, exemptions, and the different types of aircraft and crew. These definitions are the building blocks for everything that follows in dangerous goods operations.