400/500 Series Garmin Optional Displays
400/500 Series Garmin Optional Displays
400/500 Series Garmin Optional Displays
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TERRAIN Phase of Flight<br />
The TERRAIN Phase of Flight definitions are listed below.<br />
•Enroute Phase - Defined as when the aircraft is more than 15 NM from the<br />
destination airport, or when the conditions for Ternimal, Approach, and Departure<br />
Phases are not met.<br />
•Terminal Phase - Defined as when all three of the following conditions are met:<br />
(1) The aircraft is 15 NM or less from the destination runway.<br />
(2) The distance to the destination runway threshold is decreasing.<br />
(3) The aircraft is at or below (lower than) a straight line drawn between the two<br />
points specified in Table 2-2 (relative to the destination runway).<br />
Distance-to-Runway Height-above-Runway<br />
15 NM 3<strong>500</strong> Feet<br />
5 NM 1900 Feet<br />
Table 2-2: Terminal Phase Distance-to-Runway versus<br />
Height-Above-Runway<br />
•Approach Phase – Defined as when all three of the following conditions are met:<br />
(1) The distance to destination runway threshold is equal to or less than 5 NM.<br />
(2) The height above the destination runway threshold elevation is equal to or less<br />
than 1900 feet.<br />
(3) The distance to the destination runway threshold is decreasing.<br />
Section 2<br />
TERRAIN Operation<br />
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