190-01754-01 Rev. 4
FAA Approved AFMS or Supplemental AFM for the Garmin G3X Touch EFIS
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Both visual and aural altitude minimums alerts are provided. During a descent to minimums, the
minimums bug will change from cyan to white when the aircraft descends to within 100 ft of minimums.
An aural “Minimums, Minimums” alert will be triggered when the aircraft’s altitude descends through
minimums and the minimums bug will change to Amber. As the aircraft altitude climbs back above
minimums, the minimums bug will change to white 50 ft above minimums and cyan 150 ft above
minimums. Alerting is rearmed once the aircraft is 150 ft or more above the
minimum’s altitude.
If a new approach is loaded into the external navigator, the Minimums Altitude display is not
automatically updated with the new approach minimums. The pilot must update the Minimums
Altitude Display with the MDA/DH for the approach loaded into the navigator.
7.10 AOA Probe (Optional)
The G3X Touch PFD will display angle of attack from the GAP 26 AOA probe if installed. The GSU
25D uses the pressure from the GAP 26 probe and the pitot/static pressures it already receives from
the existing aircraft pitot/static system to determine the aircraft’s angle of attack (AOA).
The AOA indications and warnings presented on the G3X system are for reference only and are not
intended as replacements
for the aircraft’s original stall warning system. The AOA stall warning
margin and indications may not be the same at different flap settings, and are only supported for
positive G flight.
7.11 GAD 27 Wig Wag (Optional)
The GAD 27 module provides a feature that provides the ability to flash the Landing and Taxi lights of
the airplane in an alternating fashion, otherwise known as “Wig Wag”. Two 3-position switches
control this feature, one for the landing lights and one for the taxi lights:
•
ON
– Respective light is on
•
FLASH
– Respective light will flash
•
OFF
– Respective light is off
When both switches are in the FLASH position, the landing and taxi lights alternate off and on with
each other to produce the ‘Wig-Wag’ effect.
7.12 EIS Caution / Warning Lights
If the G3X EIS display is outside the pilot’s primary field of view and a PFD is not installed to provide
EIS annunciations, discreet Caution/Warning lights are installed. The lights are installed in the
primary field of view and are labeled ENGINE. Only a G3X EIS exceedance from a gauge on the
EIS Bar triggers the EIS Caution/Warning lights. EIS gauges that are not on the EIS Bar do not alert.
