Vnav, Approach procedures, Ils approach – BendixKing SG 465 System EFS 50 User Manual
Page 150: Back course approach

Operating Instructions
5.3
Issued 4/95
SW 06/07/08/11
Pointer #1 to the desired #1
bearing source. Using CRS
knob, select desired course TO
or FROM the waypoint (for the
on-side LNAV only). The course
deviation bar on the EHSI now
provides guidance in flying the
selected course. Waypoint pas-
sage is indicated by the TO-
FROM indicator and waypoint
BEARING pointer reversal.
Note: Wind vector and speed
information is presented if sup-
plied by ancillary equipment
and only if the system was
configured to display the infor-
mation during installation.
Once the external LNAV system
transmits to the EFS 50 that it is
in an enroute mode, the EHSI
and system sensitivity is set at
5NM left or right of course for full-
scale CDI deflection.
Note: Depending on the type of
LNAV installed, the Lateral
Deviation Scale may be differ-
ent and may support only DTK.
◗
VNAV
VNAV operation greatly depends
on the type of VNAV installed. It
is therefore very important to
refer to the Aircraft Flight Manual
Supplement and VNAV operation
manual for additional information.
APPROACH PROCEDURES
◗
ILS APPROACH
On the CP 467 or CP 469 , select
VOR as the Primary NAV sensor
with the NAV push button. Then
tune the appropriate ILS frequen-
cy. Note on the EHSI that when
an ILS frequency is selected
LOC replaces the VOR annunci-
ation, the glideslope scale is dis-
played, and as the glide slope
and localizer scales appear on
the EADI the sky/ ground raster
is reduced in size to provide a
high-contrast background for
them. Once an ILS frequency is
selected, the Bearing pointer and
TO-FROM indicator associated
with that NAV disappears.
When DME Hold is selected on
the DME control panel, DME dis-
tance is displayed in white.
Groundspeed or Time-To-Station
is replaced with the held VOR
frequency followed by an orange
H for HOLD. (DME groundspeed
and VOR frequency may not be
displayed in all installations.)
◗
BACK COURSE APPROACH
An option may be selected at the
time of installation and certifica-
tion to automatically declutter GS
information when the aircraft
heading is greater than + or - 105
degrees from selected ILS
course. EHSI NAV MAP CDI
sensing is reversed and “BC” is
annunciated below the deviation
scale. EADI CDI sensing is
reversed and “BC” is displayed to
the left of the center diamond.
Not all installations will declutter
the glideslope scale. This is a
display configuration option
selected at the time of installa-
tion.