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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.
Barometric
Minimum
Bug
Barometric
Minimum
Box
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.
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.
190-00592-06 Rev. A
Light Blue Within 2500 ft
Figure 2-40 Barometric MDA/DH Alerting Visual Annunciations
Figure 2-41 Barometric MDA/DH
Garmin G1000 Pilot's Guide for the Diamond DA40/40F
White Within 100 ft
Yellow When Altitude Reached
FLIGHT INSTRUMENTS
73
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