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Definitions, as published

The definition of each term exactly as its official source words it, with the article or page it comes from.

1,785 records · page 20 of 36

Term slugDefinition textCitation
safe-area-in-the-context-of-a-casualty Safe area in the context of a casualty is, from the perspective of habitability, any area(s) which is not flooded or which is outside the main vertical zone(s) in which a fire has occurred such that it can safely accommodate all persons onboard to protect them from hazards to life or health and provide them with basic services. Resolution MSC.216(82), Annex, SOLAS chapter II-2 reg. 3, new para. 51, printed p. 55
safety-centre Safety centre is a control station dedicated to the management of emergency situations. Safety systems’ operation, control and/or monitoring are an integral part of the safety centre. Resolution MSC.216(82), Annex, SOLAS chapter II-2 reg. 3, new para. 52, printed p. 55
cargo Cargo means property tendered for air transportation accounted for on an air waybill. All accompanied commercial courier consignments, whether or not accounted for on an air waybill, are also classified as cargo. Aircraft operator security programs further define the term “cargo.” 49 CFR §1540.5, definition of Cargo (current eCFR page; accessed 2026-10-11).
certified-cargo-screening-facility Certified cargo screening facility (CCSF) means a facility certified by TSA to screen air cargo in accordance with part 1549. As used in this subchapter, “certified cargo screening facility” refers to the legal entity that operates a CCSF at a particular location. 49 CFR §1540.5, definition of Certified cargo screening facility (CCSF).
certified-cargo-screening-program Certified cargo screening program (CCSP) means the program under which facilities are authorized to screen cargo to be offered for transport on certain passenger aircraft in accordance with 49 CFR part 1549. 49 CFR §1540.5, definition of Certified cargo screening program (CCSP).
checked-baggage Checked baggage means property tendered by or on behalf of a passenger and accepted by an aircraft operator for transport, which is inaccessible to passengers during flight. Accompanied commercial courier consignments are not classified as checked baggage. 49 CFR §1540.5, definition of Checked baggage.
escort Escort means to accompany or monitor the activities of an individual who does not have unescorted access authority into or within a secured area or SIDA. 49 CFR §1540.5, definition of Escort.
indirect-air-carrier Indirect air carrier (IAC) means any person or entity within the United States not in possession of an FAA air carrier operating certificate, that undertakes to engage indirectly in air transportation of property, and uses for all or any part of such transportation the services of an air carrier. This does not include the United States Postal Service (USPS) or its representative while acting on the behalf of the USPS. 49 CFR §1540.5, definition of Indirect air carrier (IAC).
screening-function Screening function means the inspection of individuals and property for weapons, explosives, and incendiaries. 49 CFR §1540.5, definition of Screening function.
screening-location Screening location means each site at which individuals or property are inspected for the presence of weapons, explosives, or incendiaries. 49 CFR §1540.5, definition of Screening location.
secured-area Secured area means a portion of an airport, specified in the airport security program, in which certain security measures specified in part 1542 of this chapter are carried out. This area is where aircraft operators and foreign air carriers that have a security program under part 1544 or 1546 of this chapter enplane and deplane passengers and sort and load baggage and any adjacent areas that are not separated by adequate security measures. 49 CFR §1540.5, definition of Secured area.
security-identification-display-area Security Identification Display Area (SIDA) means a portion of an airport, specified in the airport security program, in which security measures specified in this part are carried out. This area includes the secured area and may include other areas of the airport. 49 CFR §1540.5, definition of Security Identification Display Area (SIDA).
sterile-area Sterile area means a portion of an airport defined in the airport security program that provides passengers access to boarding aircraft and to which the access generally is controlled by TSA, or by an aircraft operator under part 1544 of this chapter or a foreign air carrier under part 1546 of this chapter, through the screening of persons and property. 49 CFR §1540.5, definition of Sterile area.
unescorted-access-to-cargo Unescorted access to cargo means the authority granted by an aircraft operator or IAC to individuals to have access to air cargo without an escort. 49 CFR §1540.5, definition of Unescorted access to cargo.
all-cargo-air-transportation All-cargo air transportation means the transportation by aircraft in interstate air transportation of only property or only mail, or both. 14 CFR §291.2, Definitions, definition of All-cargo air transportation.
interstate-air-transportation Interstate air transportation means the transportation of passengers or property by aircraft as a common carrier for compensation, or the transportation of mail by aircraft— (1) Between a place in— (i) A State, territory, or possession of the United States and a place in the District of Columbia or another State, territory, or possession of the United States; (ii) Hawaii and another place in Hawaii through the airspace over a place outside Hawaii; (iii) The District of Columbia and another place in the District of Columbia; or (iv) A territory or possession of the United States and another place in the same territory or possession; and (2) When any part of the transportation is by aircraft. 14 CFR §291.2, Definitions, definition of Interstate air transportation.
service-scheduled-cargo Service, scheduled cargo means transport service operated pursuant to published flight schedules including extra sections. There is no requirement on the number of weekly flights nor is there a requirement that the schedule be published in the Official Airline Guide. 14 CFR §291.2, Definitions, definition of Service, scheduled cargo.
wet-lease-agreement Wet-Lease Agreement means an agreement under which one carrier leases an aircraft with flight crew to another air carrier. 14 CFR §291.2, Definitions, definition of Wet-Lease Agreement.
foreign-indirect-air-carrier Foreign Indirect Air Carriers. For purposes of this section, “foreign indirect air carrier” (FIAC) is defined as any person, not a citizen of the United States, who undertakes indirectly to engage in the air transportation of property. 19 CFR §122.48b(c)(2)(ii), definition sentence for foreign indirect air carrier (FIAC).
customer Customer means a party who has an ownership interest in cargo, as either a buyer or seller, who engages with a logistics provider to arrange transport of the cargo to the United States. A foreign entity that provides services that involve aggregating shipments from customers, in which the foreign entity acts as a facilitator and engages with a logistics provider for the importation of cargo into the United States, is not a customer for the purposes of this paragraph (d)(4). 19 CFR §122.48b(d)(4)(i), Definitions, Customer.
logistics-provider Logistics provider means an entity that provides transportation, importation, and/or delivery services for the importation of cargo into the United States. 19 CFR §122.48b(d)(4)(i), Definitions, Logistics provider.
regulated-agent The name, address, and code associated with a party that ensures security controls for the transportation of cargo by air in accordance with standards established by a CBP-recognized body. 19 CFR §122.48b(d)(4)(xi), Regulated agent name, address, and code; data-element description, not a standalone entity definition.
acas-filing-type The CBP-specified filing code that represents the nature of the handling and transportation of the cargo shipment (e.g., Standard, Express, E-Commerce). 19 CFR §122.48b(d)(4)(xii), ACAS filing type.
administrator means the Administrator, Pipeline and Hazardous Materials Safety Administration. 49 CFR 171.8
adsorbed-gas See § 173.115 of this subchapter. 49 CFR 171.8
aerosol means an article consisting of a non-refillable receptacle containing a gas (compressed, liquefied, or dissolved under pressure), with or without a nonpoisonous (other than a Division 6.1 Packing Group III material) liquid, paste, or powder, and fitted with a self-closing release device allowing the contents to be ejected as a foam, paste, or powder or in a liquid state or in a gaseous state. 49 CFR 171.8
agricultural-product means a hazardous material, other than a hazardous waste, whose end use directly supports the production of an agricultural commodity including, but not limited to a fertilizer, pesticide, soil amendment or fuel. An agricultural product is limited to a material in Class 3, 8 or 9, Division 2.1, 2.2, 5.1, or 6.1. 49 CFR 171.8
aircraft-battery means a battery designed in accordance with a recognized aircraft battery design standard (e.g. FAA technical standard order) that is capable of meeting all aircraft airworthiness requirements and operating regulations. 49 CFR 171.8
approval means a written authorization, including a competent authority approval, issued by the Associate Administrator, the Associate Administrator's designee, or as otherwise prescribed in the HMR, to perform a function for which prior authorization by the Associate Administrator is required under subchapter C of this chapter (49 CFR parts 171 through 180). 49 CFR 171.8
approved means approval issued or recognized by the Department unless otherwise specifically indicated in this subchapter. 49 CFR 171.8
asphyxiant-gas means a gas which dilutes or replaces oxygen normally in the atmosphere. 49 CFR 171.8
associate-administrator means the Associate Administrator for Hazardous Materials Safety, Pipeline and Hazardous Materials Safety Administration. 49 CFR 171.8
atmospheric-gases means air, nitrogen, oxygen, argon, krypton, neon and xenon. 49 CFR 171.8
authorized-inspection-agency means: (1) A jurisdiction which has adopted and administers one or more sections of the ASME Boiler and Pressure Vessel Code as a legal requirement and has a representative serving as a member of the ASME Conference Committee; or (2) an insurance company which has been licensed or registered by the appropriate authority of a State of the United States or a Province of Canada to underwrite boiler and pressure vessel insurance in such State or Province. 49 CFR 171.8
authorized-inspector means an Inspector who is currently commissioned by the National Board of Boiler and Pressure Vessel Inspectors and employed as an Inspector by an Authorized Inspection Agency. 49 CFR 171.8
bag means a flexible packaging made of paper, plastic film, textiles, woven material or other similar materials. 49 CFR 171.8
bar means 1 BAR = 100 kPa (14.5 psi). 49 CFR 171.8
barge means a non-selfpropelled vessel. 49 CFR 171.8
biological-product See § 173.134 of this subchapter. 49 CFR 171.8
biological-substances-category-b See § 173.134 of this subchapter. 49 CFR 171.8
bottle means an inner packaging having a neck of relatively smaller cross section than the body and an opening capable of holding a closure for retention of the contents. 49 CFR 171.8
bottom-shell means that portion of a tank car tank surface, excluding the head ends of the tank car tank, that lies within two feet, measured circumferentially, of the bottom longitudinal center line of the tank car tank. 49 CFR 171.8
box means a packaging with complete rectangular or polygonal faces, made of metal, wood, plywood, reconstituted wood, fiberboard, plastic, or other suitable material. Holes appropriate to the size and use of the packaging, for purposes such as ease of handling or opening, or to meet classification requirements, are permitted as long as they do not compromise the integrity of the packaging during transportation, and are not otherwise prohibited in this subchapter. 49 CFR 171.8
break-bulk means packages of hazardous materials that are handled individually, palletized, or unitized for purposes of transportation as opposed to bulk and containerized freight. 49 CFR 171.8
btu means British thermal unit. 49 CFR 171.8
bulk-packaging means a packaging, other than a vessel or a barge, including a transport vehicle or freight container, in which hazardous materials are loaded with no intermediate form of containment. A Large Packaging in which hazardous materials are loaded with an intermediate form of containment, such as one or more articles or inner packagings, is also a bulk packaging. Additionally, a bulk packaging has: (1) A maximum capacity greater than 450 L (119 gallons) as a receptacle for a liquid; (2) A maximum net mass greater than 400 kg (882 pounds) and a maximum capacity greater than 450 L (119 gallons) as a receptacle for a solid; or (3) A water capacity greater than 454 kg (1000 pounds) as a receptacle for a gas as defined in § 173.115 of this subchapter. 49 CFR 171.8
bundle-of-cylinders means assemblies of UN cylinders fastened together and interconnected by a manifold and transported as a unit. The total water capacity for the bundle may not exceed 3,000 L, except that a bundle intended for the transport of gases in Division 2.3 is limited to a water capacity of 1,000 L. Not permitted for air transport. 49 CFR 171.8
bureau-of-explosives means the Bureau of Explosives (B of E) of the Association of American Railroads. 49 CFR 171.8
c means Celsius or Centigrade. 49 CFR 171.8
captain-of-the-port means the officer of the Coast Guard, under the command of a District Commander, so designated by the Commandant for the purpose of giving immediate direction to Coast Guard law enforcement activities within an assigned area. As used in this subchapter, the term Captain of the Port includes an authorized representative of the Captain of the Port. 49 CFR 171.8

Sources

1,049 further records are on file but not shown, because the publisher's terms do not clearly allow them to be republished.