VFOM— Vertical Figure of Merit
VFR—
Visual Flight Rules
VLOC— VOR/Localizer Receiver
VNAV— Vertical Navigation
VOL—
Volume
VOR— VHF Omnidirectional Radio Range
VPL — Vertical Protection Level
VS—
Vertical Speed
VSR—
Vertical Speed Required
WAAS — Wide Area Augmentation System
WPT— Waypoint
WX—
Weather
XTK—
Crosstrack Error
11 - MESSAGES
ABBREVIATIONS &
NAV TERMS
187