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Terms for subject Aviation (1895 entries)

unmanned aircraft	A power-driven aircraft, other than a model aircraft, that is designed to fly without a human operator on board. aircraft (UA) and unmanned aircraft system
unmanned aircraft system	An aircraft and its associated elements which are operated with no pilot on board. aircraft (UA) and unmanned air vehicle
up front control panel	UFCP	Киселе­в
up-front control panel	UFCP	Киселе­в
upwind leg	A flight path parallel to the landing runway in the direction of landing
urgency	Condition concerning the safety of an aircraft or other vehicle, or of some person on board or within sight, but which does not require immediate assistance. The spoken word for urgency is PAN PAN, and it is pronounced three times.
urgent PIREP	A pilot report containing weather information significant to the safety of flight. An urgent PIREP includes information on the following: (a) volcanic ash; (b) tornadoes, funnel clouds, waterspouts; (c) severe turbulence; (d) severe icing; (e) hail; (f) low-level wind shear; and (g) any other reported weather phenomena considered to be hazardous or potentially hazardous to flight operations.
user agency	The agency, organization or military command responsible for the activity for which Class F airspace has been provided. The user agency shall be identified for Class F restricted areas, military operations areas, and danger areas and, where possible, should be identified for Class F advisory areas.
v/i	visually inspected	Zealot­2002
vector	A heading given by a controller to a pilot on the basis of radar-derived information to provide navigational guidance
vectored thrusting	Changing the direction of an airplane engines thrust with angled nozzles or vanes
veer-off	A type of runway excursion in which an aircraft exits the side of the runway, having failed to confine its takeoff, landing or ground manoeuvring to the runway
veg	vegetable
vege	vegetable
veg	vegetable
vege	vegetable
vehicle control service	The provision, by FSSs, of commands and instructions to control the movements of ground traffic on manoeuvring areas at designated uncontrolled aerodromes
vehicle corridor	A space delineated by parallel, 5.9-in.-wide, solid white lines spaced 24.6 ft apart to provide guidance to vehicle and equipment operators.
vented fuel	Usable fuel that is intentionally or unintentionally released while the aircraft is airborne
verification and validation	V and V	Michae­lBurov