A Duncan Aviation avionics installation team from the company's satellite facility in Atlanta, Georgia, recently finished installing a Gogo Avance L5 system in a customer's Learjet 75 in their hangar in Birmingham, Alabama. The preliminary wiring work had been completed earlier at Duncan Aviation's satellite facility in Denver, Colorado, and the final installation of the Avance L5 box and MB13 antenna was completed after the FAA approved the STC in September.

Installing this system now ensures that Duncan's customers will avoid obsolescence issues as Gogo modernises its air-to-ground (ATG) network with the activation of its new long-term evolution (LTE) network in May 2026. Now, operators of Learjet 40/45/70/75 aircraft can upgrade to Gogo's Avance L5 wi-fi system and remain connected to the LTE network during flight.

Duncan, an authorised Gogo dealer, has installed the Avance L5 system on hundreds of larger-capacity jets in the past several years. With the new equipment installed, passengers and crew aboard mid-sized aircraft, such as its customer's Learjet 75, can achieve faster speeds, use more devices thanks to greater bandwidth and enjoy streaming audio and video on their personal devices during flights, too. The Avance L5 keeps passengers and crew connected to Gogo's LTE network and provides the opportunity to transition to the Avance LX5 system, once it becomes available.

Although developed by a third-party engineering firm, the licenses for the STC and the PMA installation kits for the Avance L5 are available exclusively through Duncan Aviation.

Duncan Aviation is offering operators the opportunity to schedule time ahead of Gogo's switch to LTE and upgrade their Gogo in-flight connectivity systems. In May 2026, more than 2,000 aircraft equipped with ATG equipment will lose their in-flight connectivity. Duncan Aviation's hangar capacity and available labour will be limited the closer it gets, so the company is urging operators not to delay: the phase-out of the classic ATG network is less than eight months away.

When Gogo's Avance LX5 system is available, passengers and crew will be able take advantage of the greater speeds of Gogo's 5G network with the replacement of the LRU.