Garmin G1000 Pilot’s Guide for the Diamond DA42NG
190-00962-02 Rev. A
74
FLIGHT INSTRUMENTS
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APPENDICES
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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 box appears
with the altitude in light blue text. The bug appears on the altitude tape in light blue 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 2-36 Barometric MDA/DH Alerting Visual Annunciations
Yellow When Altitude Reached
White Within 100 ft
Barometric
Minimum
Box
Barometric
Minimum
Bug
Light Blue Within 2500 ft
Setting the barometric Minimum Descent Altitude/Decision Height and bug:
1)
Press the
TMR/REF
Softkey.
2)
Turn the large
FMS
Knob to highlight the Minimums field.
3)
Turn the small
FMS
Knob to select BARO. Off is selected by default. Press the
ENT
Key or turn the large
FMS
Knob to highlight the next field.
4)
Use the small
FMS
Knob to enter the desired altitude from zero to 16,000 feet.
5)
To remove the window, press the
CLR
Key or the
TMR/REF
Softkey.
Figure 2-37 Barometric MDA/DH
Alerting is inhibited while the aircraft is on the ground and until the aircraft reaches 150 feet above the MDA.
If the aircraft proceeds to climb after having reached the MDA, once it reaches 50 feet above the MDA, alerting
is disabled.
