Duncan Aviation Readying for Gogo 5G April 25, 2023 Installations of 5G Provisions and 5G STC Portfolio in Development ORLANDO (AEA Booth #906) – Duncan Aviation, in partnership with Gogo Business Aviation (NASDAQ: GOGO), is actively developing several additional 5G Supplemental Type Certifications (STCs) for the Gogo 5G system and provisioning multiple models of popular business aircraft. “The Duncan Aviation partnership on the active development of a comprehensive 5G STC portfolio is leading the industry as we prepare to launch 5G service later this year,” said Dave Salvador, vice president of the aftermarket channel for Gogo. “There is great anticipation in the market for 5G and the enhanced inflight connectivity experience it will deliver, and these STCs are a critical component.” The STCs Duncan has actively in development for Gogo 5G will cover the following in-service aircraft: Bombardier Global Express, 5000, XRS, 5500, 6000, 6500 Bombardier Challenger CL-650, CL-605, CL-604 Bombardier Challenger 300, 350 Gulfstream GIV, G300, G400 Gulfstream GIV-X, G350, G450 Citation 560XL, XLS, XLS+ Additional aircraft models will be added to the program as first-article aircraft are identified. “We are excited to support business operators in their quest for continually improving their connectivity in flight,” says Nate Klenke, Duncan Aviation’s completions and modifications sales manager in Lincoln. “As an industry leader in the installation and certification of connectivity solutions and a longtime partner with Gogo, we are committed to developing solutions that allow customers to take full advantage of Gogo’s upgraded 5G network.” Operators who have an AVANCE L5 installed have the foundation required for an upgrade to Gogo 5G, and Gogo is offering significant savings – up to $100,000 in rebates – through the company’s First To Fly promotion. Aircraft will receive 5G provisions and operate on Gogo’s 4G network until the X3 (5G) LRU is available for installation. Gogo 5G has been designed to deliver high throughput with very low latency to address the increased demand in data-heavy services and applications in use today, such as video conferencing and social media, as well as emerging technologies in the future. The 5G chip passed a critical design review earlier this year, and Gogo remains on track to launch in the fourth quarter of 2023. The Duncan Aviation STCs have been used for more than 265 installations of the AVANCE L5 system. Once the 5G STCs are complete, Duncan Aviation will perform the installations at its full-service facilities in Battle Creek, Mich., Lincoln, Neb., Provo, Utah, and many of the company’s 26+ satellite locations. About Gogo Gogo is the world's largest provider of broadband connectivity services for the business aviation market. We offer a customizable suite of smart cabin systems for highly integrated connectivity, inflight entertainment and voice solutions. Gogo's products and services are installed on thousands of business aircraft of all sizes and mission types from turboprops to the largest global jets, and are utilized by the largest fractional ownership operators, charter operators, corporate flight departments and individuals. As of December 31, 2022, Gogo reported 3,279 business aircraft flying with Gogo’s AVANCE L5 or L3 system installed, 6,935 aircraft flying with its ATG systems onboard, and 4,475 aircraft with narrowband satellite connectivity installed. Connect with us at www.gogoair.com. About Duncan Aviation Duncan Aviation is an aircraft service provider supporting the aviation needs of government and business operators and other service providers. Services include major and minor airframe inspections, engine maintenance, major retrofits for cabin and cockpit systems, full paint and interior services, engineering and certification services, and preowned aircraft sales and acquisitions. Duncan Aviation also has international aircraft components solutions experts available 24/7/365 at +1 402.475.4125 who can handle any aircraft system problem with immediate exchanges, rotables, loaners or avionics/instrument/accessory repairs and overhauls. Complete service facilities are located in Battle Creek, Lincoln, and Provo. We also have dozens of other facilities strategically located throughout the United States to provide customers with regional support and the quickest response possible to avionics, engine and airframe Aircraft-on-Ground (AOG) situations. For more information about any of Duncan Aviation’s services, call +1 402.475.2611 or visit www.duncanaviation.aero.