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when the selected MDA is valid and greater than 20 feet.
BARO
Minimum
Vertical Speed
Readout
Vertical
Speed Target
MDA Bug
10
GF1110_082a
Conformal Heading Scale
The scale is marked above the horizon line in 5 degree increments and can display a range of
approximately 25 degrees. The heading mode is either Magnetic or True as selected via the FMS
and indicated on the HUD.
Conformal Heading Index
The conformal heading index is located above the horizon line to indicate the airplane heading in
reference to the external scene.
To avoid clutter with the airplane reference symbol, it is only displayed when the pitch angle
exceeds ±2 degrees and remains greater than ±1.5 degrees.
Conformal Selected Heading Bug
A selected heading bug is displayed on the horizon line and, when read in conjunction with the
conformal heading scale, corresponds to selected heading.
Conformal Drift Bug
The drift bug is displayed below the conformal horizon line when the FPV is more than 5 degrees
away from the horizon line and remains in view until the FPV returns within 4.5 degree of the
conformal heading line.
If the FPV is near the horizon line, drift can be easily discerned by the FPV lateral displacement
from the center of the conformal heading index.
FLIGHT INSTRUMENTS
Flight Crew Operating Manual REV 51, Aug 14, 2006
CSP 700−6
Volume 2
11−10−84
HUD SYMBOLOGY (CONT'D)
Conformal Drift Bug (Cont’d)
Conformal
Heading
Index
Conformal
Heading
Scale
Conformal
Selected
Heading Bug
Conformal
Drift Bug
415 00
405 00
410 00
SPD
F250
280
260
253
240
220
410 00
GF1110_083a
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 51, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−6
Volume 2
11−10−85
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 51, Aug 14, 2006
CSP 700−6
Volume 2
11−10−86
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
　
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