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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
Valid GPS data
D
Enhanced AHRS provides valid velocity and heading.
D
When flying the MOT flight plan, waypoints and legs leading up to the
MOT are displayed until being sequenced using normal FMS
sequencing criteria. The MOTxx waypoint is displayed on the MFD at
all times when the MOT flight plan is active. When the FMS is operating
in dual mode, each FMS defines the MOT flight plan independently.
However, the slaved FMS synchronizes the MOT, FHAF waypoints and
the final direction turning into the FHAF.
GENERAL REQUIREMENTS WHEN MOT IS ACTIVATED
The FMS transitions to ACTIVE FLT PLAN page 1/x with the MOT flight
plan displayed.
The MOT flight plan is inserted in front of the existing flight plan with a
discontinuity placed in between the MOTxx and HOV waypoint.
Sequencing the MOTxx waypoint is inhibited until MOT CANCEL is
selected.
The lateral deviation scaling is set to 0.1 NM when the MOT pattern is
activated and transitions to the normal RNP value for the current phase
of flight when MOT is canceled.
NOTE:
After passing the FHAF waypoint, the lateral deviation is
displayed with a scaling of a two dot deflection equal to
0.02 NM.
The RNP value is blank on the PROGRESS page when MOT mode is
engaged and remains blank until MOT is canceled. The RNP value is
blank because the MOT is non--RNP operation.
RNP related alert messages UNABLE RNP and UNABLE RNP NEXT
WP are suppressed when in MOT.
NOTE:
Since MOT is non--RNP operation, the alert messages are
irrelevant for the operation.
During the MOT pattern, the vertical deviation scale is transmitted as
150 ft when active for the descent portion of the pattern.
The desired track displayed on the MCDU and output on ASCB is set
to the course of the straight leg into FHAF.
Modifications to the active MOT flight plan are not permitted (for
example, no changing constraints, no changing angles, no vertical
direct--to, no deleting waypoints).
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
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6-171
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