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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
— Direct--to does not result in a discontinuity even though several
waypoints are deleted or a single waypoint is added.
— When an airway is inserted in the flight plan, there is no
discontinuity since the pilot has to specify the beginning and end
points.
— The INTERCEPT function does not create a discontinuity before
or after the intercept point. When choosing the heading--to
intercept option, a fly heading select leg is inserted disengaging
the FMS when the leg is sequenced.
Alternate Origin -- The alternate origin is the destination of the
D
primary flight plan. No alternate flight plan is specified until the
primary destination has been specified. Changing the primary
destination clears the alternate flight plan because the alternate
origin changes.
Alternate Waypoints -- Alternate waypoints apply only to the
D
alternate portion of the flight plan. The FMS guidance is not engaged
until the pilot selects the alternate destination. When the alternate
portion of the flight plan is enabled, the corresponding waypoints are
incorporated into the primary portion of the flight plan. At that point,
all active flight plan rules apply.
Alternate Destination -- The alternate destination is entered when
D
defining a flight plan to an alternate. Like the primary flight plan, the
alternate destination is entered as the final waypoint to close out the
alternate flight plan.
Climb Constraints -- Climb constraints are altitude and speed
D
constraints associated with waypoints in the climb or cruise portion
of the flight plan. Altitude constraints are AT, AT or ABOVE, or AT
or BELOW. For example, an entry of 10000A (A following the
altitude) indicates AT or ABOVE. An entry of 10000B (B following
the altitude) indicates AT or BELOW. An entry of 10000 (no letter
following the altitude) indicates AT. Climb speed constraints are
observed by the FMS until the waypoint containing the constraint is
passed.
Speed Limit -- An example of speed limits is the 250 knots (kts)
D
below 10,000 feet (ft) limit entered during performance initialization.
Other limits are imposed by the airframe such as V
Speed Schedule -- Speed schedules are the default speeds used
D
by the FMS for the departure, climb, cruise, descent, approach and
go--around phase of flight. Speed schedules are defined during
performance initialization.
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
.
MO
Flight Plan
7-7
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