Using the G-1000Using the G-1000 Omni-Bearing Selector Omni-Bearing Selector

(OBS) Mode for VFR (OBS) Mode for VFR ArrivalsArrivals

SM Dan FernandezSM Dan Fernandez

NM SQ IINM SQ II

12 Aug 200912 Aug 2009

OBS ModeOBS Mode

Sets the current active-to waypoint as the Sets the current active-to waypoint as the primary navigation referenceprimary navigation reference

Prevents the system from sequencing to next Prevents the system from sequencing to next waypoint in flight planwaypoint in flight plan

Allows pilot to set a desired course to/from a Allows pilot to set a desired course to/from a waypoint using the waypoint using the CRS/BAROCRS/BARO knob on the HSI knob on the HSI

Must be in a GPS Navigation mode via CDI softkeyMust be in a GPS Navigation mode via CDI softkey

““In the OBS Mode, a GPS waypoint is treated like a In the OBS Mode, a GPS waypoint is treated like a VOR”VOR”

Normal vs OBS ModeNormal vs OBS Mode

Normal (OBS not Normal (OBS not activated)activated)

OBS ModeOBS Mode

Automatic sequencing of Automatic sequencing of waypointswaypoints

Manual sequencing - “holds” Manual sequencing - “holds” on selected waypointon selected waypoint

Manual course change on HSI Manual course change on HSI not possiblenot possible

Manually select course to Manually select course to waypoint from HSIwaypoint from HSI

Always navigates “TO” the Always navigates “TO” the active waypointactive waypoint

Indicates “TO” or “FROM”Indicates “TO” or “FROM”

Must be in this mode for final Must be in this mode for final approach courseapproach course

Cannot be set from final Cannot be set from final approach course or published approach course or published holding patternholding pattern

Uses of OBS ModeUses of OBS Mode

Missed Approach ProceduresMissed Approach Procedures Departure ProceduresDeparture Procedures Temporary deviations from flight Temporary deviations from flight

plans, especially near a waypointplans, especially near a waypoint• Weather DeviationsWeather Deviations• Search PatternsSearch Patterns

VFR arrivals, particularly at night VFR arrivals, particularly at night

Selecting OBS ModeSelecting OBS Mode

Example: Arrival to KAEGExample: Arrival to KAEGfrom NW Practice Areafrom NW Practice Area

OBS ModeOBS Mode

In OBS Mode the Flight Plan is In OBS Mode the Flight Plan is “suspended” and the current GPS “suspended” and the current GPS waypoint is treated like a VORwaypoint is treated like a VOR

Although mostly an IFR feature, it is Although mostly an IFR feature, it is invaluable in VFR as an outstanding invaluable in VFR as an outstanding Situational Awareness toolSituational Awareness tool• Remember: See-and-Avoid!Remember: See-and-Avoid!• AP use is “manual”AP use is “manual”

Questions?Questions?