VOT ------------------VOR Test Signal VR --------------------Rotation speed VR --------------------Volts Regulated
VRMS ---------------Volts, Root Mean Square VS --------------------Stalling speed, or the minimum steady flight speed at which the airplane is controllable VS --------------------Vertical Speed -------------------Stalling speed in the landing configuration
VS0
-------------------Stalling speed for a specified flight configuration
VS1VSCS -----------------Voice Switching and Control System VSCU ----------------Vertical Signal Conditioner Unit VSTOL --------------Vertical or Short Takeoff and Landing VSV ------------------Variable Stator Vanes VSWR ---------------Voltage Standing Wave Ratio VTA ------------------Vertex Time of Arrival VTAS ----------------Visual Target Acquisition System VTL ------------------Variable Threshold Logic VTOL ----------------Vertical Take Off and Landing
--------------Takeoff safety speed for Category A rotorcraft
VTOSS VX --------------------Speed for best angle of climb VY --------------------Speed for best rate of climb
W ---------------------Watts WA -------------------AIRMET WAAS ---------------Wide-Area Augmentation System WARN ---------------Warning WCMD --------------Wind Corrected Munitions Dispenser WCP -----------------Weather Radar Control Panel WD -------------------Wind Direction angle WEA -----------------Weather WO, W/O -----------Washout WPT -----------------Waypoint WS --------------------SIGMET WS --------------------Wind Speed WSFO ---------------Weather Service Forecast Office WSO -----------------Weather Service Office WST ------------------Convective SIGMET WW ------------------Severe Weather Watch WXR -----------------Weather Radar Transceiver
XCVR ----------------Transceiver XDCR ----------------Transducer XFMR ---------------Transformer XMIT ----------------Transmit XMOS ---------------High Speed Metal Oxide Silicon semiconductor XMTR ---------------Transmitter XPDR ----------------Transponder XTK DEV -----------Cross Track Deviation YD --------------------Yaw Damper YDM -----------------Yaw Damper Module
Z ----------------------Zulu Time (Greenwich Mean Time)
Appendix 2 - Periodic Table of Chemical Elements
Appendix 3 - Trigonometric Functions
Appendix 4 - International Phonetic Alphabet and Morse Code
Letter Word Morse Code
A Alfa . –
B Bravo – . . .
C Charlie – . – .
D Delta – . .
E Echo .
F Foxtrot . . – .
G Golf – – .
H Hotel . . . .
I India . .
J Juliett . – – –
K Kilo – . –
L Lima . – . .
M Mike – –
N November – .
O Oscar – – –
P Papa . – – .
Q Quebec – – . –
R Romeo . – .
S Sierra . . .
T Tango –
U Uniform . . –
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