433 abbreviations
Abbreviation Meaning
VPA Vertical Path Approach
VPATH Vertical path
V/R Voltage regulator
V/REF Reference velocity
V/S Vertical speed
VSI Vertical speed indicator
VSM Vertical separation limit
VSO Stall speed in landing configuration
VSWR Voltage–standing wave ratio
V/TRK Vertical track
VX Speed for best angle of climb
VY Speed for best rate of climb
WAAS Wide Area Augmentation System
WD Wind direction
WINDR Wind direction
WMA WXR waveguide adapter
WMI WXR indicator mount
WMS Wide-area master station
WMSC Weather message switching center
WMSCR Weather message switching center replacement
WPT Waypoint
WRT WXR receiver transmitter
WX Weather
WXR Weather radar system
WYPT Waypoint
XCVR Transceiver
XFR Transfer
XMIT Transmit
XMSN Transmission
XMTR Transmitter
XPDR Transponder
XTK Crosstrack
YD Yaw damper