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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
When the search pattern is suspended by placing *SUSPEND* on the
from waypoint, a suspend waypoint is projected back onto the active leg
of the flight plan from the helicopters present position. The suspend
waypoint is placed in the flight plan and displayed on the MFD. When
LNAV is engaged and the suspend mode is used in the search pattern,
LNAV is disengaged.
When in suspend during a search pattern, a direct--to any downpath
search pattern waypoint removes the suspend waypoint and any
waypoints prior to the direct--to search pattern waypoint.
Exiting the suspend mode by selecting RESUME on the ACTIVE FLT
PLAN page results in a direct--to back to the suspend waypoint. The
FMS provides normal path guidance to the suspend waypoint and
subsequent search waypoint.
MARK ON TARGET (MOT)
The mark on target (MOT) function gives the pilot the ability to mark a
position as the helicopter is flying over a target and return the helicopter
back to that position. Often, the MOT mode is used when flying a search
pattern. When performing a search, the crew notes an object (target)
to investigate. The pilot flies the helicopter over the target to mark the
latitude and longitude. The FMS gives lateral and vertical guidance
information and commands to facilitate the return of the helicopter back
to a position where the pilot views the target. The MOT maneuver
consists of a downwind leg, upwind turn, and final approach that
terminates at a zero ground speed downwind of the target, as shown
in Figure 6--126.
On MOT engagement, the FMS marks the latitude and longitude of the
target location (which is designated as waypoint MOTxx), generates a
flight plan to be displayed on the MFD, and provides guidance back to
the target location. At all times during the MOT maneuver, the FMS
gives speed, lateral deviation, and vertical deviation information as
displayed on the PFD.
A28- - 1146- - 181
Navigation
REV 3 Mar 2009
6-163
Honeywell International Inc. Do not copy without express permission of Honeywell.
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