1 Rarely, fistulas occur externally to the skin or internally to another part of the biliary tree, to the pleural cavity or bronchial tree, or to the hepatic artery or portal vein or other vascular structures.
Load factor (aeronautics) In aeronautics, the load factor is defined as the ratio of the lift of an aircraft to its weight and represents a global measure of the stress (load) to which the structure of the aircraft is subjected: where: Since the load factor is the ratio of two forces, it is dimensionless.
Useful Load: the difference between ramp weight or max allowable weight and basic empty weight. Useful load can be thought of as the weight of the useful items on board, such as passengers and baggage. Payload: the weight of cargo, baggage and passengers (including pilots).