Press the DOWN ARROW
again to see Estimated
Time of Arrival (ETA) at
your destination waypoint
and Velocity Made Good
(VMG).
Velocity Made Good (VMG) is the component of the total ground speed
that is parallel to the course line. (Ground speed is actual ground
speed, measured at a given instant.)
VELOCITY MADE GOOD
Press the DOWN ARROW
to see Time To Go (TTG)
and Speed Of Advance
(SOA).
Time To Go (TTG), on the second line of the screen above, is the
length of time required to complete the current leg, given the current
speed of advance.
Speed Of Advance (SOA), on the third line, is the component of the
ground speed in the direction of the destination waypoint. lt is calcu-
lated using speed and ground course. When XTE = 0, SOA = VMG.
4-6
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