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Heading Scale and Index
The partial HSI compass has a range of 200 degrees and is displayed at the bottom center of the
combiner. The heading index in the shape of an inverted triangle is located at the top of the scale.
The HSI moves gradually out of view of the combiner when the horizon line lowers with high pitch
attitudes. The HSI Compass is not displayed when T/O mode is selected to allow the horizon line
to remain conformal as much as possible.
The HSI compass heading information is consistent with the Magnetic/True heading selected on
the PFD.
Selected Heading Bug
A selected heading bug is located on the edge of the HSI compass. It is not displayed when
located outside of the range of the HSI compass.
Selected Heading Readout
The selected heading readout is located to the left of the HSI compass. The selected heading
readout is displayed when:
· The heading bug is outside the displayed conformal heading scale on the horizon line,
or
· The selected heading value is adjusted by the pilot and for a 10 second time period
thereafter.
FLIGHT INSTRUMENTS
Rev 7, Dec 01, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
11−10−83
HUD SYMBOLOGY (CONT'D)
Selected Heading Readout (Cont’d)
Selected
Heading Bug
Heading
Scale
Heading
Index
Selected
Heading
Readout
GF1110_084a
Conformal Course Selected Bug
The conformal selected course bug (or desired track when in FMS navigation mode) consists of an
arrow pointing up below the conformal heading scale.
When the selected course value exceeds the displayed heading scale, the arrow is at the end of
the conformal horizon line in between the airspeed and altitude tapes with half of the symbol
displayed.
Course Selected Readout
The selected course readout is located at the left of the heading scale. It is displayed when the
selected course pointer is out of view on the HSI and during course selection. The selected course
readout is not displayed when the primary navigation source is the FMS.
Desired Track Readout
The desired track readout is displayed in place of the selected course readout, and is labeled DTK.
It is displayed when the FMS is the primary navigation source.
FLIGHT INSTRUMENTS
Flight Crew Operating Manual Rev 7, Dec 01, 2005
CSP 700−5000−6
Volume 2
11−10−84
HUD SYMBOLOGY (CONT'D)
Course Selected/Desired Track Pointer
The selected course/desired track pointer is displayed in the HSI compass. Due to the limited
display of the HSI compass, it is possible that only half the pointer is visible.
Conformal
Selected
Course Selected/
Desired Track Pointer
Selected Course
Readout
Desired
Track Readout
Course
Bug
GF1110_085a
TO/FROM Indicator
The conventionnal TO/FROM Indication is displayed when VOR/LOC is selected as the primary
navigation source.
When the course deviation indicator (CDI) is between ±88° in reference to the VOR course, the
TO/FROM symbol indicates TO. When the CDI exceeds ±92° from the VOR course, the TO/FROM
symbol indicates FROM. The indicator is removed when the course deviation is between 89° and
91°.
A square replaces the conventional TO/FROM indicator when the FMS or the LOC is selected as
the navigation source.
Navigation Source Indication
The navigation source indication is displayed at the lower left of the display. The primary
navigation source information and the pilot sensor selection must be present in order to display the
navigation source.
Sensor Source Indication
When an alternate data source is selected, an annunciation is displayed to indicate the source
selected. The indication is displayed continuously when the pilot and the copilot use the same
source.
FLIGHT INSTRUMENTS
Rev 7, Dec 01, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
11−10−85
HUD SYMBOLOGY (CONT'D)
True Heading Annunciation
The True heading annunciation is located at the left of the navigation source indication, when the
FMS True heading as been selected.
Sensor Source
Indication
True Heading
Annunciation
NA Source
Annunciation
TO/FROM
Indicator
V
GF1110_086
Bearing Pointer
Two bearing pointers can be displayed on the HSI compass. Due to the limited visual range of the
HSI compass, at least one part of the pointer will remain in view.
The bearing pointers displayed on the HUD are consistent with the selection on the pilot’s PFD.
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