Garmin G1000 Pilot's Manual page 339

Why does the G1000 not automatically sequence
to the next waypoint?
The G1000 only sequences flight plan waypoints when
automatic sequencing is enabled (i.e., no "OBS" or "SUSP"
annunciation). For automatic sequencing to occur, the
aircraft must also cross the "bisector" of the turn being
navigated. The bisector is a perpendicular line between
two flight plan legs which crosses through the waypoint
common to both legs.
How can a waypoint be skipped in an approach,
a departure, or an arrival?
The G1000 allows the pilot to manually select any ap-
proach, departure, or arrival leg as the active leg of the
flight plan. This procedure is performed on the MFD,
from the Active Flight Plan Page by highlighting the de-
sired waypoint and pressing the ACT LEG softkey, then
the ENT key to approve the selection. The GPS then pro-
vides navigation along the selected flight plan leg.
When does turn anticipation begin?
The G1000 smoothes adjacent leg transitions based
upon a normal 15° bank angle (with the ability to roll up
to 25°) and provides three pilot cues for turn anticipa-
tion:
1) A waypoint alert ("NEXT DTK ###°") flashes on
the PFD 10 seconds before the turn point.
2) A flashing turn advisory ("TURN TO ###°")
appears on the PFD when the pilot is to begin
the turn. The HSI (GPS mode) automatically
sequences to the next DTK value.
3) The To/From indicator on the HSI flips momen-
tarily to indicate that the midpoint of the turn has
been crossed.
190-00498-00 Rev. A
When does the CDI scale change?
When 30 nm from the destination, the G1000 begins
a smooth CDI scale transition from 5.0 nm (en-route
mode) to 1.0 nm (terminal mode). When 2 nm from the
FAF during an active approach, the CDI scale transitions
to 0.3 nm (approach mode). When executing a missed
approach, the CDI can be returned to the 1.0 nm scale by
pressing the SUSP softkey. The CDI is also set to 1.0 nm
(terminal mode) within 30 nm of the departure airport.
Why does the HSI not respond like a VOR when
OBS mode is active?
Unlike a VOR, the CDI scale used on GPS equipment
is based on the cross-track distance to the desired course,
not on angular relationship to the destination. Therefore,
the CDI deflection on the GPS is constant regardless of
the distance to the destination and does not become less
sensitive when further away from the destination.
What is the correct missed approach procedure?
How is the missed approach holding point
selected?
To comply with TSO specifications, the G1000 does
not automatically sequence past the MAP. The first way-
point in the missed approach procedure becomes the ac-
tive waypoint when the SUSP softkey is pressed AFTER
crossing the MAP. All published missed approach pro-
cedures must be followed, as indicated on the approach
plate.
To execute the missed approach procedure prior to the
MAP (not recommended), select the Active Flight Plan
Page and use the ACT LEG softkey to activate the missed
approach portion of the procedure.
Garmin G1000 Pilot's Guide for Cessna Nav III
APPENDIX C
C-3