Appendix B: Acronyms
USAF—United States Air Force
USDA—United States Department of Agriculture
V
VCOA—Visual Climb Over Airport / Airfield
VDA—Vertical Descent Angle
VDP—Visual Descent Point
VFR—Visual Flight Rules
VGSI—Visual Glide Slope Indicator
VHF—Very High Frequency
VLJ—Very Light Jet
VMC—Visual Meteorological Conditions
VMINI—Minimum Speed–IFR
VNAV—Vertical Navigation
VNEI—Never-Exceed Speed-IFR
VSI—Vertical Speed Indicator
VOR—Very High-Frequency Omnidirectional Range
VORTAC—Very High Frequency Omnidirectional Range/Tactical Air Navigation
VOT—VOR Test Facility Signal
VPA—Vertical Path Angle
VREF—Reference Landing Speed