Cirrus Perspective
™
by Garmin – Pilot’s Guide for the SR20/SR22/SR22T
190-00820-08 Rev. A
480
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
NON-ALTITUDE CRITICAL MODES (VS, VNAV)
If the aircraft decelerates to an IAS below the minimum commandable autopilot airspeed, a red “UNDERSPEED
PROTECT ACTIVE” annunciation (Figure 7-47) will appear in the CAS window. The vertical flight director
mode will change from active to armed (Figure 7-48), and the autopilot will cause the aircraft to pitch down
until reaching a pitch attitude at which IAS equals the minimum commandable autopilot airspeed.
Vertical FD
Mode Armed
Figure 7-48 Vertical Flight Director Mode Armed
When sufficient power/thrust is available, the autopilot will recapture the previously selected vertical
reference and the flight director mode will change from armed to active.
NOTE:
When the autopilot is outside normal operating limits, it uses more aggressive commands to return
to normal limits.
7.2 S-TEC FIFTY FIVE X AUTOPILOT (OPTIONAL)
NOTE:
This section covers only the additional ‘AP’ (autopilot engaged) status annunciation that may appear
in the Perspective
™
AFCS Status Box. This status annunciation is not analogous to both the Perspective
™
and the S-TEC Fifty Five X. Refer to the approved S-TEC Fifty Five X Pilot’s Operating Handbook (POH) for
comprehensive list of annunciations and operating instructions.
In addition to the status and mode annunciations that are simultaneously displayed on both the Perspective
™
(AFCS Status Box) and the S-TEC Fifty Five X (Autopilot Display and/or Remote Annunciator Display), the
Perspective
™
displays an additional status annunciation of ‘AP’ when the autopilot is engaged.
Autopilot
Status
Figure 7-49 Autopilot Engaged (Perspective
™
AFCS Status Box)
Summary of Contents for Cirrus Perspective SR20
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