TM 1-1520-238-10
B-18
Change 9
Appendix B – Abbreviations and Terms (cont)
VSI
Vertical Speed Indicator
VSWR
Voltage Standing Wave Ratio
W
W
Watt
WAS
Weapon Action Select
WE
Weight Empty
WHL
Wheel
WHT
White (Switch position)
WPN
Weapon
WPT
Waypoint
WRP
Wiper (windshield)
WSHLD
Windshield
WSHLD WPR
Windshield Wiper
WSPS
Wire Striker Protection System
X
XFEED
Crossfeed
XFER
Transfer
XMSN
Transmission
XTK
Crosstrack
Y
Y
Yellow
Z
