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usability factor

.תַחְב, .תְעוּ συντελεστής χρήσης
 אנגלית אוצר מילים
usability factor
.תְעוּ The percentage of time during which the use of a runway or system of runways is not restricted because of the cross-wind component. (Cross-wind component means the surface wind component at right angles to the runway centre line.)