Glossary of Terms
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Ultimate loadUltimate load. The limit load multiplied by the appropriate factor of safety. | |
UN numberUN number. The four-digit number assigned by the United Nations Committee of Experts on the Transport of Dangerous | |
Unaccompanied baggageUnaccompanied baggage. Baggage that is transported as cargo and may or may not be carried on the same aircraft with the | |
Unburned hydrocarbonsUnburned hydrocarbons. The total of hydrocarbon compounds of all classes and molecular weights contained in a gas sample, | |
Unclaimed baggageUnclaimed baggage. Baggage that arrives at an airport and is not picked up or claimed by a passenger. | |
Unidentified baggageUnidentified baggage. Baggage at an airport, with or without a baggage tag, which is not picked up by or identified with a | |
Upper-air chartUpper-air chart. A meteorological chart relating to a specified upper-air surface or layer of the atmosphere. | |
Usability factorUsability factor. The percentage of time during which the use of a runway or system of runways is not restricted because of the | |