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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
Latitude/Longitude Crossing
When the LAT/LONG prompt (1R), as shown in Figure 6--146, is
pushed, the FMS calculates the crossing latitude or longitude when
either the longitude or latitude is entered. The course, distance, ETE,
and fuel remaining are displayed when the aircraft proceeds directly to
the waypoint.
For example, to know where the aircraft crosses the 100_ West
longitude line for the current flight plan, enter W100 at 1R, as shown in
Figure 6--150. The FMS computes the latitude. The course, distance,
ETE, and fuel remaining to fly directly from the current aircraft position
to N33_24.9 W100_00.0 is also displayed. The computed point (2L) is
line selected to the scratchpad and inserted in the flight plan as a
temporary waypoint. When required, latitude is entered and the FMS
calculates the longitude. When more than one intersection with the
flight plan exists, the closest one is displayed.
00806.03
Figure 6- -150
CROSS LAT/LON 1/1 Page
When the flight plan does not cross the entered latitude/longitude, the
message NO CROSSING POINT FOUND is displayed in the
scratchpad.
A28- - 1146- - 181
Navigation
6-200
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
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