Pilot’s Guide for the Cirrus SR2x with Cirrus Perspective by Garmin
190-00820-11 Rev. A
86
FLIGHT INSTRUMENTS
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STEM
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VER
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FLIGHT
INSTRUMENTS
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AUDIO P
ANEL
& CNS
FLIGHT
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GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
LOW ALTITUDE ANNUNCIATION
NOTE:
The Low Altitude Annunciation is available only for aircraft with GIA 63W Integrated Avionics Units
when SBAS is available. This annunciation is not shown for systems with TAWS or Terrain-SVS, unless terrain
alerting is inhibited.
When the Final Approach Fix (FAF) is the active waypoint in a GPS SBAS approach using vertical guidance,
a Low Altitude Annunciation may appear if the current aircraft altitude is at least 164 feet below the prescribed
altitude at the FAF. A black-on-amber ‘LOW ALT’ annunciation appears to the top right of the Altimeter,
flashing for several seconds then remaining displayed until the condition is resolved.
Figure 2-38 Low Altitude on GPS SBAS Approach
with TAWS Inhibited
Altimeter
Low Altitude
Annunciation
MINIMUM DESCENT ALTITUDE/DECISION HEIGHT ALERTING
For altitude awareness, a Minimum Descent Altitude (MDA) or Decision Height (DH), based on barometric
altitude or temperature compensated altitude can be set. When active, the altitude setting is displayed to the
lower left of the altimeter and with a bug at the corresponding altitude along the altimeter (once the altitude is
within the visible range of the tape). The following visual annunciations alert the pilot when approaching the
MDA or DH:
• When the aircraft altitude descends to within 2500 feet of the MDA/DH setting, a box labeled ‘BARO MIN’
or ‘COMP MIN’ (based on the selected altitude source) appears with the altitude in cyan text (or magenta
for TEMP COMP). The bug appears in cyan (or magenta for TEMP COMP) on the altitude tape at the
corresponding altitude once in range.
• When the aircraft passes through 100 feet of the MDA or DH, the bug and text become white.
• Once the aircraft reaches the MDA/DH, the bug and text become amber.
Figure 2-39 Minimum Descent Altitude/Decision Height Alerting Visual Annunciations
MDA/DH
Setting
MDA/DH
Bug
Altitude Reached
Within 100 feet
Within 2500 feet
