Ultra-Low-Cost CarrierTopic: Airline Operations & Economics
An ultra-low-cost carrier (ULCC) is an airline that competes primarily on base ticket price by unbundling services and charging separately for baggage, seat selection, boarding priority, and other add-ons.Reference
Aviation glossary
Concise definitions for aviation terminology, from METAR and NOTAM to aerodynamics and airline operations. Search directly or scan alphabetically.
U
- Unit Load DeviceTopic: Airport OperationsA Unit Load Device (ULD) is a standardized container or pallet that consolidates baggage and cargo into single units for efficient loading into aircraft cargo holds. ULDs lock into the aircraft floor and are tracked as reusable airline assets.
- Useful LoadTopic: Aircraft PerformanceUseful load is the total weight an aircraft can carry beyond its basic empty weight, including fuel, occupants, cargo, and baggage. It is calculated by subtracting basic empty weight from maximum gross weight.
Continue exploring
Move from quick definitions into deeper guides and topic hubs.