Glossary

UTC Differential: The difference in time between that at the present position and UTC.

UTM (Universal Transverse Mercator map

projection system): Also known as Military Grid Coordinates, the UTM grid consists of 60 north-south/east-west zones, each six degrees wide in longitude.

VVFR: Visual Flight Rules.

VOR: Very High Frequency Omni-directional range. A navigational aid that transmits signals such that a receiver can indicate its current radial or bearing from the transmitter.

VHF: Very High Frequency. The range of frequencies between 30 and 300 MHz.

VNAV: Vertical Navigation. See Altitude Assist.

WWaypoint: A navigation fix used in area navigation and defined by latitude and longitude coordinates.

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