Duncan Aviation Announces TDR-94 Transponder Service: Same-Day Evaluation and 3-Day Turntime

LINCOLN, NEB — Duncan Aviation has developed a TDR-94 / TDR-94D Quick Turn Team to provide operators with TDR-94/TDR-94D transponder service that includes same-day evaluation and three-day turntimes, with AOG options available when needed.

“Having serviced the -003 TDR-94 units for the last several years and with more than 30 years of experience working the Rockwell Collins transponder line, these technicians have also developed a highly efficient process that will allow a one-day repair with proper scheduling,” says Kevin MIesbach, Business Development Manager for Duncan Aviation’s avionics and instrument shop.

The Rockwell Collins TDR-94 / TDR-94D transponder is a solid-state, crystal-controlled receiver/transmitter specifically designed for TCAS II-equipped business aircraft.  The company offers the service of these units at Duncan Aviation’s main avionics and instrument shop in Lincoln, Nebraska, as well as through Duncan Aviation’s satellite avionics facilities located throughout the United States.

Duncan Aviation also modifies earlier transponders to the -500-501 series, which will meet the ADS-B mandate for 2020 when the unit is properly installed and certified.

Duncan Aviation has been authorized by Rockwell Collins to repair and service transponders with the Rockwell Collins part numbers of 622-9352-002 through -008; -108; -207; -308-311; -408-411; -500-501 and 622-9210-002 through -008; -108; -207; -308-311; -408-411; -500-501.

For more information, call Duncan Aviation at +1 402.475.2611 or 1.800.562.6377 or visit

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