SEA News 2024

Southeast Aerospace Secures Expanded International Approvals For Garmin GI 275 IVSI And ESI In Part 25 Aircraft

picture of panel with Garmin GI 275 IVSI

SEA is pleased to announce that we have received expanded international approvals for the Garmin GI 275 Electronic Flight Instrument in Part 25 aircraft on an Approved Model List as an Electronic Standby Instrument (ESI) and as an Instantaneous Vertical Speed Indicator (IVSI). Following the initial FAA approvals in Q1 2023, SEA has now also secured validations from the Transportation Safety Board of Canada (TCCA), Argentina's National Civil Aviation Administration (ANAC), and the European Union Aviation Safety Agency (EASA). This extends our global reach beyond the prior approval from Brazil’s National Civil Aviation Agency (ANAC) and Mexico's Federal Civil Aviation Agency (AFAC). The FAA issued STC number ST01985WI and ST02004WI, respectively.

Luke Gomoll, SEA's Aircraft Modifications Sales Representative, stated, "This extended approval marks a significant milestone, allowing us to support the installation of the GI 275 as a cost-effective replacement for aging flight instruments in a broad range of Part 25 aircraft within these regions. Owners and operators of business jets can now address obsolescence issues and take advantage of the enhanced capabilities offered by the Garmin GI 275 on their flight decks. These international approvals reinforce the value and applicability of our two Part 25 AML STCs for installation of the GI 275 as an ESI and IVSI in the in the global business aviation sector."

The ESI version of the Garmin GI 275 electronic flight instrument offers an all-in-one option to replace pre-existing, obsolete, higher-cost ESI and mechanical standby instruments, while the IVSI version of the GI 275 electronic flight instrument offers the opportunity to replace aging and obsolete IVA-81A and IVA-81D IVSI units.

Lightweight and compact, the GI 275 is intentionally designed to take advantage of the common 3.125-inch flight instrument size, reducing installation time and preserving the existing aircraft panel. SEA has designed, manufactured, and PMA'd a 3-ATI to 3.125-inch adapter plate to simplify the installation further. The adapter plate is available for purchase with the STC.

The complete AML STC list for the GI 275 ESI reads as follows:
  • Bombardier: BD-100-1A10 Challenger 300, BD-700-1A10 & BD-700-1A11
  • Global Express, XRS, 5000, GVFD, 5500, 6000, 6500, Learjet 55C, and 60
  • Dassault Aviation: Falcon 50 and 2000 series
  • Embraer: EMB-135BJ (Legacy 600)
  • Gulfstream Aerospace: G-IV, G-V, G150, 200 and Galaxy
  • Textron Aviation: Citation 550, 560, 560 Excel, XLS, 650, Hawker 800(A)(B)(XP), 1000(A)(B), 750, 900XP, and 4000
The complete AML STC list for the GI 275 IVSI reads as follows:
  • Bombardier: Challenger 600 and 601 Series
  • Dassault Aviation: Fan Jet Falcon C, D, E, F, G Series, Mystere-Falcon 200, Falcon 10, Mystere-Falcon 50 and 900
  • Israel Aircraft Industries: 1121, 1121A, 1121B, 1123, 1124 and 1124A
  • Gulfstream Aerospace: 1125 Westwind Astra, Astra SPX and G-1159, G-1159A, and G-1159B
  • Learjet Inc.: Learjet 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, 55C
  • Textron Aviation: BAe.125 Series 800A, 800B, 1000A, 1000B, Hawker 800, 800XP, 1000, Mitsubishi MU-300-10, Citation 550, S550, 560, and 650

For more information, please visit or contact Aircraft Modification Representative Luke Gomoll at

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