Duncan Aviation Holds ADS-B Out STC for Hawker 800/Hawker 800XP

LINCOLN, NEB. — Duncan Aviation recently completed a Supplemental Type Certification (STC), which will upgrade existing Honeywell Primus radios in Hawker 800/800XP aircraft so they’re ADS-B Out compliant.

“Meeting the ADS-B mandate is critical, of course, but Hawker owner/operators also want to keep their aircraft in an industry-standard configuration,” says Gary Harpster, a longtime avionics representative with Duncan Aviation. “That’s why we worked with Honeywell to develop this STC, which addresses both concerns; the aircraft maintains its industry-standard configuration, and owner/operators meet the 2020 mandate deadline with time to spare.”

ADS-B Out lets aircraft automatically transmit position data to ATC ground stations and to other aircraft in the area that are equipped with ADS-B In. ADS-B Out is mandated by the FAA in the airspace that now requires a Mode-C transponder. Duncan Aviation’s STC #ST01811WI integrates ADS-B Out functionality into existing Honeywell Primus radios, adds ADS-B Out functionality to the RM-855 Radio Management Unit (RMU), and adds a standalone GPS receiver.

“Many Hawkers still have the legacy RM-850 RMUs. Honeywell has replaced it with the RM-855, which features a bright, new LCD screen. While you’re in here getting your ADS-B upgrade, we’ll install a new RM-855 in place of your RM-850, which has no capability path to ADS-B compliance,” says Chris Christianson, Avionics Install Tech Rep. “I like this Honeywell solution because we’ve already installed it on Global, Learjet, and Cessna aircraft, and we know it works. Most importantly, though, owner/operators who go with this solution are meeting the mandate well before December 31, 2019. Remember, on January 1, 2020, flight restrictions begin at 10,000 feet and above and down to as low as 3,500 feet depending on location. You’re basically grounding yourself if you don’t meet this mandate.”

As part of Duncan Aviation’s STC development program for this aircraft, you will receive 50% off a new or existing HAPP (Honeywell Avionics Protection Program) program the first year, 25% off the second and third year each of HAPP plan. These savings can easily amount to more than $50,000 on a typical corporate flight department HAPP program and are available immediately, even if you plan on installing the system after your renewal date.

Duncan Aviation holds or has access to 33 solutions for ADS-B, which allows us to perform upgrades on more than 100 aircraft model variations. Additionally, the company holds or has access to FANS solutions for 15 aircraft models. In addition to these solutions, Duncan Aviation works on a situational basis to secure validations from other international Civil Aviation Authorities for the company's NextGen FAA STCs. Visit the Duncan Aviation NextGen landing page ( to see the mandate deadlines and a searchable database that lists STCs available by aircraft make/model.

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, 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, Michigan; Lincoln, Nebraska; and Provo, Utah. 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