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TVOR very high frequency terminal omni range station. " A" _( J, c& I5 w
TWR Tower (Control Tower) , f# w( J9 u- Q; [( P" @& y
TYPE (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 V% S! U) K# L( EU Airspace Euro control project Class U (unknown traffic) - T4 G" e; M0 U& I
U/S unserviceable r' U6 o0 T j, A w6 R& O
U/V ADF UHF/VHF Automatic Direction Finding ) t& d0 @& l. v% ~8 u6 I
UAT Universal Access Transceiver . o% l* T* `% ~, e; L
UAV Unmanned (or Uninhabited) Aeronautical (or Aerial) Vehicle
" Y- A. [- n9 J; ?+ n( HUFN Until Further Notice
/ X5 v% G( m' M& d' b5 sUFO Unidentified Flying Object
( S# r3 d0 v1 ^* Y( Y( j4 dUHF Ultra High Frequencies (300 MHz-30 GHz) 1 m- }0 G" a8 T9 N& ~5 M
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; $ t1 m0 ~$ s! }, _2 r1 e& d
UL Ultra light, Ultra-l©ger motoris© . ^2 \; `+ f1 v( V0 l3 p# k
ULM Ultra light, Ultra-l©ger motoris©
' G7 q( {* n: F( J* DULTRALIGHT VEHICLE An aeronautical vehicle operated for sport or recreational purposes which does not require FAA registration, an airworthiness certificate, nor pilot c...
% s- k6 F' a0 RUMAS Unmanaged Air Space (Euro control Definition) $ i: S- y' [3 U
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... 8 B3 R: D9 \1 K- w
UNDERCARRIAGE STRUT A part of an airplane`s structure, designed to resist distortion, which supports the landing gear. 4 O1 N: ^9 ~& V, Y" _$ g$ j
UNIT 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 ... ( v* _1 Z% ^9 x* C9 `& M
UNIT 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...
! q4 C" {! D5 g' @; }9 S% X! {UNIT LESS No units, such as ratios; a quantity with standard units of 1; a quantity with primary units of 1; Synonyms: dimensionless; H* S8 A# r8 ?# V4 M k7 L4 d
UNIT 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... 0 y: D0 o1 \" {0 z
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... 9 A( y; w4 J5 N& C2 |( A" `; u% ~2 K
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...
- C: t" J, s' l4 k0 b6 l" mUNITED STATES AIR CARRIER a citizen of the United States who undertakes directly by lease, or other arrangement, to engage in air transportation.
3 z2 M& {; g1 T, DUNITS A standard quantity, such as ft or mi; Synonyms: dimension;
0 }9 R a$ [) y' A1 F: m5 m2 XUNIVERSAL 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; ( j) H$ j" M- [2 a
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... ! n/ ~8 x! x. g/ D
UPKEEP Codename for Barnes Wallis` bouncing bomb used in the Dambusters` raid
8 m2 Z' r e/ V% W& l& g* D7 ]URB User Relations Bureau (CFMU)
) q- y% b4 c: d4 o2 HUSABLE FUEL (LBS) Usable fuel (gallons) x 6.7 lbs/gallon
: a1 j3 b" s9 sUSAF US Air Force $ q7 g1 Z7 r8 g6 Q; t( G
USEFUL LOAD Maximum Ramp Weight - (minus) Basic Operating Weight + X I% `8 \* _. B+ {
USG (AL) US-Gallon (3.78 Liter)
" ?! E# A7 u' x+ [5 h( jUTC Universal Coordinated Time.
- z6 }6 `7 D9 T* b E+ WUTM Universal Transverse Mercator - U, A) [& W. i( e: a+ `# Y
V Universal Time Coordinated |
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