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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
VNAV EARLY DESCENT USING DIRECT- -TO (VPATH)
The VNAV early path descent using vertical DIRECT--TO is shown in
Figure 7--27.
The following steps apply:
An altitude constraint is entered at a waypoint (1). The FMS
D
calculates an angle and TOD (2) for the path descent.
The altitude preselector is set (3) to the ATC cleared altitude (4).
D
A vertical direct--to is conducted (5) to the constrained waypoint (1).
D
The FMS calculates the new angle and FMS transitions to VPATH.
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
Figure 7- -27
VNAV Early Path Descent Using
Vertical DIRECT- -TO
Flight Plan
7-47
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