Garmin PDAs & Smartphones G1000 Manual De Usuario

190-00498-07  Rev. A

601

Normal (OBS not activated)
• Automatic sequencing of waypoints 

• Manual course change on HSI not possible 

• Always navigates ‘TO’ the active waypoint

• Must be in this mode for final approach

course

OBS
• Manual sequencing - ‘holds’ on selected

waypoint

• Manually select course to waypoint from

HSI

• Indicates ‘TO’ or ‘FROM’ waypoint

• Cannot be set for final approach course or

published holding patterns

When OBS mode is active, the G1000 allows the pilot to set a desired course to/from a waypoint using the 

CRS/BARO Knob and HSI (much like a VOR).

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.

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. 

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.

The G1000 smooths adjacent leg transitions based on a normal 15° bank angle (with the ability to roll up to 

30°) and provides three pilot cues for turn anticipation: 

• A waypoint alert (‘Next DTK ###° in # seconds’ or ‘Next HDG ###° in # seconds’) appears on the PFD 10

seconds before the turn point and flashes as it counts down to zero.

• A flashing turn advisory (‘Turn [right/left] to ###° in # seconds’) appears on the PFD 10 seconds before the

turn and flashes as it counts down to zero. ‘Turn [right/left] to ###° now’ or ‘Next [DTK/HDG] to ###° now’
is displayed when the pilot is to begin the turn and the HSI (GPS mode) automatically sequences to the next 
DTK or HDG value.

• The  To/From  indicator  on  the  HSI  flips  momentarily  to  indicate  that  the  midpoint  of  the  turn  has  been

crossed.