Specifications

SECTION III
INSTRUMENTATION AND AVIONICS
MODEL 560
MISCELLANEOUS ANNUNCIATIONS :
AP FAIL Illuminates in amber to indicate automatic flight control system (AFCS) failure.
MAG1 (MAG2) Heading Source, in mid left-center of PFD. MAG annunciation if AUTO selected on
(DG1 (DG2) gyro slave switch; DG if MAN selected. Annunciation is in amber. No annunciation
if normal selections are made.
SG1 (SG2) Amber, in upper left side of primary flight display (PFD) (annunciated only in case of
reversion selection). Primary Flight Display DU-870 No. 1 (or No. 2) is providing
symbol generator for both displays. Selection is made on the SG1/NORM/SG2
switch on the MFD controller. In SG1 position SG2 will be a duplicate of SG1; in
SG2 position SG1 will be a duplicate of SG2.
ADC1 (ADC2) Amber, in upper left side of PFD (annunciated only in case of reversion selection).
ADC1 (ADC2) is the source of air data information for both displays, or a cross-
selection of both systems (ADC2/ADC1) has been made. Selection is by the ADC
button on the DC-550 PFD controller.
CAT2 Green CAT2 annunciation indicates that the excessive ILS deviation monitors are
active on the PFD. Amber annunciation of CAT2 occurs when deviations of
parameters required for Category 2 approaches are out of limits. For the monitors
to become active APR mode must be selected, both NAV radios must be tuned to
the same frequency, and both radio altimeters must be set to 100 feet.
FLIGHT DIRECTOR MODE SELECTOR
The flight director mode selector consists of eight push-on, push-off switches that select various flight
director/autopilot modes of operation. The green mode activation light in the switch (button) will be
illuminated if the corresponding mode is in the arm or capture state.
The status of the selected mode is displayed in white letters (annunciations) in the primary flight
display (PFD) when armed, and in green when capture has occurred (or when selected on, for those modes
where capture occurs immediately).
The flight director can be selected off by deselecting all of the modes on the MS-560 Flight Director
Mode Selector. The command bars will bias out of view. If single-cue flight director operation is selected
on the DC-550 Display Controller the flight director/autopilot will not engage if only a vertical mode is
selected. If no modes are selected on the MS-560 mode selector the autopilot will engage in a basic
heading hold/pitch hold mode which will be annunciated PIT and ROL in the primary flight display (PFD).
Operation of the various modes is explained under Primus 1000 System Operation in this section.
The pilot and copilot may select either NAV 1 or NAV 2 for display on their respective primary flight display
(PFD) by means of the NAV button on the DC-550 display controller. The respective NAV will be
automatically selected upon power up; the sequence of selection will then be NAV2/NAV1/NAV2 etc. for the
pilot and NAV1/NAV2/NAV1 etc. for the copilot. If both sides have been selected to the same source, the
annunciation of VOR 1, etc., in the PFD will be in amber. The selection of NAV 1, NAV 2 or FMS is
annunciated in the upper right corner of the EHSI as VOR 1, VOR 2 and FMS respectively.
Figure 3-18. MS-560 Mode Selector Panel
I 3-36 Configuration AA 56OMB-01