User Guide

190-00592-02 Rev. A
Garmin G1000 Pilot’s Guide for the Diamond DA40/40F
D-3
APPENDIX D
The most common application for using the OBS Softkey is the missed approach. The G1000 suspends
automatic waypoint sequencing (indicated by a “SUSP” annunciation placed on the HSI) when the missed
approach point (MAP) is crossed. This prevents the G1000 from automatically sequencing to the missed
approach holding point (MAHP). During this time, the OBS Softkey designation changes to SUSP . Pressing
the SUSP Softkey reactivates automatic waypoint sequencing. The OBS Softkey then resumes its normal
functionality.
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 line passing through the waypoint common to two flight plan legs at an
equal angle from each leg.
HOW CAN A WAYPOINT BE SKIPPED IN AN APPROACH, A DEPARTURE, OR AN ARRIVAL?
The G1000 allows the pilot to manually select any approach, 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
desired waypoint and selecting the ACT LEG Softkey then the ENT Key to approve the selection. The GPS
then provides navigation along the selected flight plan leg.
WHEN DOES TURN ANTICIPATION BEGIN?
The G1000 smooths adjacent leg transitions based on a normal 15° bank angle (with the ability to roll up to
25°) and provides three pilot cues for turn anticipation:
• A waypoint alert (“NEXT DTK ###°”) flashes on the PFD 10 seconds before the turn point
• A flashing turn advisory (“TURN TO ###°”) appears on the PFD when the pilot is to begin the turn and the
HSI (GPS mode) automatically sequences to the next DTK value
• The To/From indicator on the HSI flips momentarily to indicate that the midpoint of the turn has been
crossed
WHEN DOES THE CDI SCALE CHANGE?
When 30 nm from the destination, the G1000 begins a smooth CDI scale transition from 5.0 nm (enroute
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 selecting 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 crosstrack distance to the desired
course, not on the 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.