Specifications

SECTION III
MODEL 560 INSTRUMENTATION AND AVIONICS
NOTE
When the back course (BC) mode is selected on the flight director (the selected
course is more than 90 degrees from the airplane heading) the glide slope indication
will not be present.
EADI CAUTION OR FAILURE ANNUNCIATIONS
Flight Director
Command Cue -
The magenta flight director command cues can be selected in single cue
or cross pointer format by pressing the SC/CP button on the mode
selector panel. In the single cue format, if a lateral mode is not selected,
the command bars will remain biased out of view. Power up default
selection is single cue.
Source Annunciations - Source annunciations (ADC1 and ADC2, ATT1 and ATT2, SG1 and
SG2) will be displayed to indicate the sources of air data, attitude and
symbol generator information, respectively. If the pilot and copilot are
using their normal sources, there is no source annunciated.
“Cross-selections” will be annunciated in white, and when both displays
are selected to the same source the annunciation will be in amber, to
remind the pilots of the single source selection. Annunciation is in the
upper left section of the EADI display.
Radio Altitude When at an altitude within operational range of the radio altimeter, the
radio altitude display appears in green in the lower section of the EADI
sphere.
Vertical Track Alert - A vertical track alert message (VTA) will be displayed in amber above the
glideslope/vertical path annunciation when VNAV function of FMS is
selected for display. A white FMS will also be annunciated above the
vertical deviation scale.
Vertical Navigation Display - When VNAV mode is selected on the mode selector panel and NAV or
FMS is selected on the display controller as a navigation source, the
vertical navigation display comes into view. The magenta (FMS) or green
(VORTAC) pointer indicates the center of the computed climb or descent
angle.
Flight Director Failure - If the flight director fails, the flight director command bars disappear and
an amber FD FAIL warning appears in the top left center of the display.
All FD mode annunciators will be removed.
Internal Failures - A large red X will cover the face of the primary flight display.
Radio Altimeter Failure - If the radio altimeter fails, the radio altitude readout will be replaced by
an amber RA. If the low altitude awareness indication is present, it will
be removed.
Pointer/Scale Failures
Glide Slope (Vertical Deviation),
Altitude, Airspeed, and Vertical
Speed -
Failure of pointers/scales is indicated by: Replacing the digital readouts
with dashes, drawing a red X through the scale (IAS, ALT, GS only), and
removing the pointer (GS and VS only).
Attitude Failure - Attitude failure is annunciated by appearance of ATT FAIL in red in the
middle of the attitude sphere. The sphere will change to solid blue, and
the pitch scale and roll pointer will disappear.
I 56OMB-01 Configuration AA 3-55