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TVOR very high frequency terminal omni range station.
2 f" u: m" X& u* e2 f U$ w6 hTWR Tower (Control Tower)
: a# w- ]( G B1 F5 t% p1 VTYPE (1) As used with respect to the certification, ratings, privileges, and limitations of airmen, means a specific make and basic model of aircraft, incl... 2 F9 a) ]& T. W* {2 W/ H f- t `/ q
U Airspace Euro control project Class U (unknown traffic) 6 R. G/ z+ r6 H' A$ Q/ x& V1 o
U/S unserviceable
4 C8 F. i" S6 L% p- lU/V ADF UHF/VHF Automatic Direction Finding 7 P6 m9 H$ x/ _+ c( S$ ~( V
UAT Universal Access Transceiver ! y3 `& y4 i- U0 N9 V1 w% U
UAV Unmanned (or Uninhabited) Aeronautical (or Aerial) Vehicle / J1 L' M9 a# v }! b
UFN Until Further Notice
/ j3 [8 a% G% D- ?* H' f; TUFO Unidentified Flying Object
: S) c( O$ [' i5 |" KUHF Ultra High Frequencies (300 MHz-30 GHz) : e3 K7 |1 f3 f" i
UHF/VHF AUTOMATIC DIRECTIONFINDING (U/V ADF) An Automatic Direction Finder that determines relative bearing to a transmitter to which it is tuned, in either the UHF band or VHF band; 3 k; v* _: T* [' r4 I( \4 F; d
UL Ultra light, Ultra-l©ger motoris©
0 X1 T& V B1 @ O- _: o# ?' b5 E( [7 ?$ EULM Ultra light, Ultra-l©ger motoris© 2 s9 }+ F9 g5 _6 B2 _
ULTRALIGHT VEHICLE An aeronautical vehicle operated for sport or recreational purposes which does not require FAA registration, an airworthiness certificate, nor pilot c... 9 w. l* [% C0 V2 l. ^! B
UMAS Unmanaged Air Space (Euro control Definition) ; M6 s C) l. e. S8 z0 P
UNDER CAMBER This means that the lower surface of the wing has a hollow curve when observed from front to back. A thin wing with a high camber will be under camber... ( r: b3 c5 W5 }1 s
UNDERCARRIAGE STRUT A part of an airplane`s structure, designed to resist distortion, which supports the landing gear.
B( g! `- g$ V, |8 wUNIT FUNCTIONS A collection of functions used as standard test cases in control systems engineering; The primary unit functions of interest in avionics are the unit ...
8 ^8 N& y/ U! Z9 R+ yUNIT IMPULSE A function used as a standard test case in control systems engineering; a spike of "area" one at time t = 0; Synonyms: impulse; See Also: unit functio... ( _, W7 L( p/ e- ?9 o
UNIT LESS No units, such as ratios; a quantity with standard units of 1; a quantity with primary units of 1; Synonyms: dimensionless;
& `: X: q6 u* _6 c9 ]! JUNIT RAMP A function used as a standard test case in control systems engineering; a line of slope 1 starting at zero at time t = 0; Synonyms: ramp; See Also: un... 8 n7 L; p1 T4 V) @: O- E
UNIT STEP A function used as a standard test case in control systems engineering; a step from zero to one at time t = 0; Synonyms: step; See Also: unit function... " x/ O& X! R- C, T0 N1 P
UNITED STATES in a geographical sense, means (1) the States, the District of Columbia, Puerto Rico, and the possessions, including the territorial waters, and (2) t...
1 X C3 D5 [" t, I8 N+ c! z& VUNITED STATES AIR CARRIER a citizen of the United States who undertakes directly by lease, or other arrangement, to engage in air transportation.
6 J8 G) y' ~" u% ^UNITS A standard quantity, such as ft or mi; Synonyms: dimension;
% e5 z! X8 C, L9 ^5 W- f0 |; w+ F$ BUNIVERSAL TRANSVERSE MERCATOR(UTM) A system of fixed earth coordinates, sometimes used instead of latitude and longitude, accurate relative to others close by, such as ground troops;
0 D" y0 r5 P- G( B, i' ^UPDATE A process by which position is reset with a known better position; updates occur at the data source level or at the physical device level, depending u...
/ Q* p- Y: n5 _4 wUPKEEP Codename for Barnes Wallis` bouncing bomb used in the Dambusters` raid ) w7 a1 I; Q. Y
URB User Relations Bureau (CFMU) / s8 i& z( H$ g% Q, G- }7 k
USABLE FUEL (LBS) Usable fuel (gallons) x 6.7 lbs/gallon
; ?: x5 L5 s9 o, p! ^USAF US Air Force
5 i2 g) P2 \7 |- r8 |' {+ [USEFUL LOAD Maximum Ramp Weight - (minus) Basic Operating Weight * w# q! y1 R( u: C1 B3 b
USG (AL) US-Gallon (3.78 Liter)
& P$ m: u; w+ L8 ^- J* mUTC Universal Coordinated Time.
# S1 f2 x' L$ t* y3 L2 E) L* A7 xUTM Universal Transverse Mercator @3 d) H1 f2 l, d
V Universal Time Coordinated |
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