SEA News 2022


Southeast Aerospace, Inc recently completed a major avionics and panel upgrade on a Citation Jet 525. SEA installed a dual Garmin G600 TXi EFIS (Electronic Flight Instrument System) and GI 275 ESI (Electronic Standby Instrument), plus a Garmin GMA 35C Audio Panel, GSR 56 Iridium Datalink system , and GFC 600 Autopilot. SEA finished off this extensive retrofit project with five new instrument panels to accommodate the newly installed equipment configuration.

citation525 before and after

A major component of this modernization project was dual Garmin G600 TXi EFIS. The G600 TXi display offers a rich PFD and MFD experience, while presenting flight instrumentation in easy-to-read formats, all in one location. The aircraft’s existing dual GTN 750Xi units, GDL 69(A) XM Receiver, and GTX 3X5 transponders were rewired and interfaced with the newly installed G600 TXi systems, allowing full functionality. A Garmin GI 275 with ADAHRS was included and configured as an ESI, offering a built-in source of back up ADI/Airspeed/Altitude, while saving space and weight.

The new EFIS also supports full autopilot integration, provided by SEA’s installation of the Garmin GFC 600. The Dual G600 TXi and GI 275 display autopilot flight director and mode annunciations, while the EFIS system supplies pitch and roll data, air data, and navigational data to the GFC 600. To elevate the passenger experience, Garmin’s GMA 35c Remote Audio Panel and GSR 56 Iridium Datalink were installed to provide enhanced entertainment and communication capabilities.

The Citation 525 already had GTN units installed making this upgrade economical for the customer. It adds extensive capability upgrades to the aircraft by replacing an older EFIS system, several instruments and an older autopilot allowing this already great airframe to be supported long into the future.

For more information on this project, or to get your customized SEA aircraft modification solutions, please contact Luke Gomoll,

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