BendixKing SG 465 System EFS 50 - Manual (Page 76)

EHSI Displays
4.1.10 Issued 4/95 SW 06/07/08/11
pointer is pointing 30 degrees to
the right of the lubber line, you
must remember that the pointer
in this instance is referenced to
the compass card — not the lub-
ber line or symbolic aircraft.
When interpreting bearing pointer
number two in this example,
remember that ADF indications
are referenced to the lubber line
and the symbolic aircraft. They
are not referenced to the com-
pass card. The compass card
can be used only to help you
determine ADF relative bearing.
Likewise, the tail of the pointer is
at 360. Indicated heading on the
compass card is 090. So relative
bearing is 90 degrees left. Actual
heading is 30 degrees. So actual
bearing from the NDB is 90
degrees to the left of 30 degrees,
which is 300 degrees.
One other thing to note about
ADF indications with failed head-
ing is this: The ADF bearing
pointer points to the station rela-
tive to the symbolic airplane.
Since the bearing pointer in the
example is pointing straight off
the right wing of the symbolic air-
plane, you may conclude the sta-
tion is straight off the right wing of
the actual airplane.
MAGNETIC/TRUE HEADING
ANNUNCIATIONS
To the left of the lubber line a
white “T” will be displayed when
the compass card is in the true
mode of operation or left blank
when in magnetic mode.
Magnetic compass heading is
automatically displayed unless
True heading is selected by a
remote switch or when the
selected primary NAV sensor is
an LNAV and it selects the True
mode of operation. Valid mag
var must be present before True
heading can be selected by the
LNAV.
GLIDE SLOPE/VERTICAL
NAVIGATION
When the selected primary NAV
sensor is ILS, MLS, or LNAV with
VNAV selected, a stationary
white vertical deviation scale will
appear on the right or left side of
the EHSI display as configured at
the time of installation and certifi-
cation. This scale provides a ref-
erence for the vertical deviation
pointer. The deviation pointer
moves in relation to the scale to
indicate glide path center with
respect to aircraft position.
When the selected primary NAV
sensor is an on-side ILS, MLS, or
LNAV in the approach mode, the
vertical deviation pointer is green
in color. If an off-side sensor is
selected for display, the deviation
pointer changes to yellow alerting
the pilot that he has selected
other than his on-side NAV sen-
sor. A cyan ponter is displayed
for VNAV provided by an on-side
LNAV in the enroute mode. Full
scale VNAV deviation represents
±1000 feet when provided by an
LNAV in the enroute mode. Prior
to 08 SW, full scale VNAV devia-
tion represents ±500 feet when