Pilot's Guide

190-01461-00 Rev. A
Garmin G1000 Pilot’s Guide for the Piper PA-44-180 Seminole
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FLIGHT INSTRUMENTS
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
LOW ALTITUDE ANNUNCIATION
NOTE: A Low Altitude Annunciation is available only when SBAS is available. This annunciation is only
available when TAWS alerting has been 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-yellow LOW ALT annunciation appears to the top left of the Altimeter, flashes
for several seconds, then remains displayed until the condition is resolved.
Figure 2-37 Low Altitude on GPS SBAS Approach
MINIMUM DESCENT ALTITUDE/DECISION HEIGHT ALERTING
For altitude awareness, a barometric Minimum Descent Altitude (MDA) or Decision Height (DH) can be set
in the Timer/References Window and is reset when the power is cycled. When active, the altitude setting is
displayed to the bottom left of the Altimeter. Once the altitude is within the range of the tape, a bug appears
at the reference altitude on the Altimeter. The following visual annunciations occur when approaching the
MDA/DH:
• When the aircraft altitude descends to within 2500 feet of the MDA/DH setting, the BARO MIN or COMP
MIN box appears with the altitude in light blue text. The bug appears on the altitude tape in light blue (or
magenta for COMP MIN) once in range.
• When the aircraft passes through 100 feet of the MDA/DH, the bug and text turn white.
• Once the aircraft reaches MDA/DH, the bug and text turn yellow and the aural alert, “Minimums. Minimums”,
is heard.
Figure 2-38 Barometric MDA/DH Alerting Visual Annunciations
Within 100 ft
Altitude Reached
Within 2500 ft
Barometric
Minimum
Box
Barometric
Minimum
Bug