BendixKing SG 465 System EFS 50 - Manual (Page 84)

EHSI Displays
4.1.18 Issued 4/95 SW 06/07/08/11
button (see section 2.3) which
will alternately select and de-
select lightning for display, how-
ever when selected, the lightning
data will be in addition to the
weather radar information if both
are provided. The weather radar
may be placed in standby if only
lightning information is desired.
A single lightning data field is
located immediately above the
weather radar data fields. Three
annunciations are possible in this
field as shown in figure 4.1.8 at
the end of this section. The
annunciation “ON” preceeded by
the lightning symbol indicates
that lightning information has
been selected for display and the
lightning sensor is operational.
The annunciation “OFF” preceed-
ed by the lightning symbol indi-
cates that lightning has been de-
selected using the lightning
select button on the RCP. This
annunciation is only presented
while a weather mode is selected
on the EFS and will not be dis-
played in installations without a
lightning select button on the
RCP. A fault condition is indicat-
ed by the annunciation “FLT” pre-
ceeded by the lightning symbol.
Possible faults are invalid or
missing 429 data from the light-
ning sensor. Therefore, selecting
lightning for display with power
removed from the lightning sen-
sor will cause a FLT annunciation
on the EFS.
FULL TIME LNAV MAP
❏ A configuration option
selectable at the time of installa-
tion and certification. It allows
the LNAV map to be displayed
when the selected primary NAV
sensor is either an ILS or ADF in
the map mode.
For configurations without the full
time LNAV map configuration
selected, when the selected pri-
mary NAV sensor is either an ILS
or ADF with the map mode
selected, the “NO MAP” mes-
sage will be annunciated since
sufficient data is not provided to
create a map presentation. How-
ever, if a bearing pointer sensor
is selected which provides bear-
ing and distance information, an
appropriate map symbol will be
displayed if the selected map
range is greater than the dis-
tance to the anvaid or waypoint.
If the selected range is less, a
normal bearing pointer will be
displayed.
If the full time LNAV MAP option
is selected, the LNAV map will be
presented when ever the select-
ed primary NAV sensor is either
an ILS or ADF with the map
mode selected. The LNAV map
will be presented all in white to
show that the information being
displayed is not to be used as pri-
mary navigation information. The
purpose of the LNAV map infor-
mation being presented is to pro-
vide the pilot better orientation
between his present position and
intended flight plan, mainly for
use during the phase of the
approach while being vectored
for the intercept. Primary naviga-