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Gx Pro Instrument Mount For Use With Garmin G3X System

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Part# 11-09714


The GX PRO has all of the features of the standard Pro Pilot autopilot with the additional capability of bi-directional communications with the Garmin G3X EFIS system. The GX PRO flight dynamics have been optimized to take full advantage of the G3X pitch and roll guidance.

When matched with a Garmin G3X, the GX PRO does not require the Pro Pilot ARINC 429 circuitry normally needed to interface with other EFIS systems. This results in a significant cost savings, yet adds full horizontal (GPSS) and vertical (GPSV) control via serial commands from the G3X.

The GX PRO is designed to follow commands from the Garmin G3X EFIS system. The G3X provides full EFIS guidance to the autopilot without the usual ARINC 429 drive signals. The GX PRO accepts proprietary NMEA commands from the G3X to implement full horizontal and vertical guidance.

When connected to the GX PRO autopilot, the G3X provides commands to control pitch, roll, heading, GPS navigation, vertical speed, and altitude capture. GPS navigation is accomplished by using the GPS receiver incorporated in the G3X. The autopilot is controlled by using the pushbuttons and menu on the bottom of the EFIS screen.

When the G3X EFIS system is connected to a Garmin WAAS approach certified receiver (such as a 430W, GNS480 or 530W) the GX PRO is fully capable of following complex flight plans, including procedure turns, holding patterns, and vertical approaches into airports.

The additional photo shows an installation in a narrow body tandem airplane (Long-EZ). The selector switch to the right of the Pro Pilot allows using either the G3X or the 430W as the signal source for the autopilot. Should either unit fail, the autopilot may be switched to the remaining GPS source.

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When I bought the device around 1,5 years ago it did not worked to well. We had several modifications to do together with the manufacturer, so i might not give the 5 stars at this time. But I have to say, the manufacturer supported me perfectly and we found and removed the troubles one by one. The device is great and the Support outstanding. I just whished there would be two separate knobs for vertical speed and altitude adjustment. Would make things much easier in flight.

April 13, 2017


Please note,'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the price for the GX Pro 11-09714 comes with servos so you can shoot an approach with this?

The GX Pro does come with two servos and has the ability to shoot an approach but you will need a certified WAAS GPS (ex GNS 430W or GTN 650) which will give the information for the approach.

Q: Is this unit compatible with certified aircraft?

No, this is intended for installation in experimental aircraft only.