IFD400 Series Pilot Guide
2-30 FMS Subsystem
Missed Approach
A Missed Approach discontinuity always precedes the first leg of
a missed approach. If the missed approach is enabled, then the
discontinuity contains the word "Enabled" and acts as a visual
cue in the flight plan, but is ignored by the FMS. If the missed
approach is disabled, then the FMS treats it like a gap and will
provide guidance outbound from the missed approach point
(MAP) rather than providing guidance to the legs in the missed
approach.
FAF Intercept Too Sharp
A FAF Intercept Too Sharp discontinuity will appear after the FAF
when the pilot direct the FMS to go direct-to the FAF and the
difference between the inbound course to the FAF and the final
approach course exceeds 45 degrees. ATC should never provide
such a clearance, but if that situation arises, the pilot will have to
manually activate the leg after the FAF while approaching the
FAF in order to continue FMS guidance on the approach. Extra
caution should be taken to ensure that a stabilized approach can
be conducted.
ENROUTE DESCENTS
A green circular top of descent (TOD) marker and label is drawn
on the map when flying “on-path” along the FMS flight plan, giving
a clear visual cue when it is appropriate to begin the enroute
descent. The rules for determining the TOD are described the
enroute VNAV section (see page 5-36). These rules are
applicable even if enroute VNAV is disabled.
There is an associated CAS countdown message 10 seconds
prior to reaching the TOD point. When the IFD is wired to the
audio panel, an associated two tone chime is also generated.
The “TOD” label may be auto-decluttered from the map
depending on map range and feature density. The TOD depiction
and CAS message are removed from the map immediately after
passing the TOD point.
Summary of Contents for IFD410 FMS/GPS
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