MISCELLANEOUS ANNUNCIATIONS
ATT1 (or ATT2) Attitude Source (amber for "cross-selection").
MIN Illuminates when the airplane reaches the preset minimum radio altitude.
(Annunciated in amber letters on white background with black border in the
upper left side of the ADI attitude sphere.) A white box is drawn around the
indication when DH is reached. When the airplane reaches the selected
minimums, MIN will flash for 10 seconds and then remain steady.
AP ENG Illuminates when the autopilot is engaged.
GREEN ARROW A green arrow will point either left or right, indicating to which flight director
(pilot’s or copilot’s) the flight director is coupled.
TCS ENG Illuminates in white to Indicate touch control steering is engaged.
TRN KNB Illuminates in amber when the autopilot turn knob is out of center. The
autopilot will not engage when the turn knob is out of center.
AP FAIL Illuminates in amber to indicate autopilot failure.
MAG1 (MAG2) Heading Source, in mid left-center of PFD. MAG annunciation if SLAVE is
selected on the applicable AHRS DG/SLAVE/TEST switch.
DG1 (DG2) Gyro slave switch; DG annunciation if DG is selected on the applicable
AHRS DG/SLAVE/TEST switch. 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). Symbol generator 1 (or No. 2) is providing
symbol generator for both PFD displays. Selection is made on the SG1/
NORM/SG2 switch on the RI-552. 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 small ADC REV buttons on the bottom of the
respective pilot’s and copilot’s instrument panels.
WPT FMS waypoint annunciation (amber), (DR [dead reckoning] - amber, DGR
[degrade] - amber, INTG [FMS integrity problem] - amber.)
Cessna Citation XLS - Instrumentation & Avionics
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