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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
VNAV LATE DESCENT USING DIRECT- -TO (VPATH)
A VNAV late path descent using vertical DIRECT--TO is shown in
Figure 7--28.
In this scenario, descent clearance is not received before the TOD is
reached. The following applies:
An altitude constraint is entered at a waypoint (1). The FMS
D
calculates an angle and TOD (2) for the path descent.
When the altitude preselector is not at a lower altitude, the message
D
RESET ALT SEL? is displayed.
At the TOD (2), FMS remains in CRUISE and remains level through
D
the TOD.
The altitude preselector is set (4) to the ATC cleared altitude (5).
D
A vertical direct--to is conducted (6) to the constrained waypoint (1).
D
The FMS calculates the angle and FMS transitions to VPATH.
Flight Plan
7-48
Honeywell International Inc. Do not copy without express permission of Honeywell.
Figure 7- -28
VNAV Late Path Descent Using
Vertical DIRECT- -TO
A28- - 1146- - 181
REV 3 Mar 2009
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