Heading Strip And Turn Rate Indicator; Obs Mode; Rev. D Garmin G300 Pilot's Guide I - Garmin G300 Pilot's Manual

heading StriP and turn rate indiCatOr

The Heading Strip displays the Current Heading, Selected Heading Bug, Current
Heading, and Current Track Indicator. Numeric labels occur every 10˚. Major tick
marks are at 5˚ intervals and minor tick marks at 1˚ intervals. A digital reading of
the current heading appears above the Attitude Indicator.
The Turn Rate Indicator is located above the Heading Strip. Tick marks to the
left and right of the displayed heading denote standard turn rates (3 deg/sec). A
magenta Turn Rate Trend Vector shows the current turn rate. The end of the trend
vector gives the heading predicted in 6 seconds, based on the present turn rate.
A standard-rate turn is shown on the indicator by the trend vector stopping at the
standard turn rate tick mark, corresponding to a predicted heading of 18˚ from the
current heading. At rates greater than 4 deg/sec, an arrowhead appears at the
end of the magenta trend vector and the prediction is no longer valid.
Turn Rate Trend
Vector
Current Heading
Selected Heading
Bug

OBS mOde

Enabling Omni-bearing Selector (OBS) Mode suspends the automatic sequencing
of waypoints in a GPS flight plan, but retains the current "active-to" waypoint as
the navigation reference even after passing the waypoint. 'OBS' is annunciated to
the left of the aircraft symbol when OBS Mode is selected.
While OBS Mode is enabled, a course line is drawn through the "active-to"
waypoint on the moving map. If desired, the course to/from the waypoint can
now be adjusted. When OBS Mode is disabled, the GPS flight plan returns to
normal operation with automatic sequencing of waypoints, following the course
set in OBS Mode. The flight path on the moving map retains the modified course
line.
190-00921-00 Rev. D
Turn Rate Indicator
(Standard Rate Tick Marks)
Heading Strip/Turn Rate Indicator
Garmin G300 Pilot's Guide
Flight instruments
Heading Strip
Current Track
Indicator
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