Garmin Cirrus Perspective SR20 Pilot's Manual page 450

AUTOMATIC FLIGHT CONTROL SYSTEM
FLIGHT DIRECTOR MODES
Flight director modes are normally selected independently for the pitch and roll axes. Unless otherwise
specified, all mode keys are alternate action (i.e., press on, press off). In the absence of specific mode selection,
the flight director reverts to the default pitch and/or roll modes.
Armed modes are annunciated in white and active in green in the AFCS Status Box. Under normal operation,
when the control for the active flight director mode is pressed, the flight director reverts to the default mode(s)
for the axis(es). Automatic transition from armed to active mode is indicated by the white armed mode
annunciation moving to the green active mode field and flashing for 10 seconds.
If the information required to compute a flight director mode becomes invalid or unavailable, the flight
director automatically reverts to the default mode for that axis. A flashing yellow mode annunciation and
annunciator light indicate loss of sensor (ADC) or navigation data (VOR, LOC, GPS, VNV, SBAS) required to
compute commands. When such a loss occurs, the system automatically begins to roll the wings level (enters
Roll Hold Mode) or maintain the pitch angle (enters Pitch Hold Mode), depending on the affected axis. The
flashing annunciation stops when the affected mode key is pressed or another mode for the axis is selected. If
after 10 seconds no action is taken, the flashing annunciation stops.
The flight director is automatically disabled if the attitude information required to compute the default flight
director modes becomes invalid or unavailable.
COMMAND BARS
Upon activation of the flight director, Command Bars are displayed in magenta on the PFD. If the aircraft
is being flown by hand, the command bars are displayed hollow (Figure 7-4). The Command Bars do not
override the Aircraft Symbol. The Command Bars move together vertically to indicate pitch commands and
bank left or right to indicate roll commands.
Command Bars (Autopilot Engaged)
Command Bars
Aircraft Symbol
If the attitude information being sent to the flight director becomes invalid or unavailable, the Command Bars
are removed from the display.
Cirrus Perspective
436
Figure 7-3 Loss of VOR Signal
Figure 7-4 Command Bars
by Garmin – Pilot's Guide for the SR20/SR22/SR22T
™
Command Bars (Pilot Hand Flying Aircraft)
190-00820-08 Rev. A