Travis Dahna

Travis Dahna is the Principal member and Electrical Systems and Equipment DER for TD Aerospace, LLC, a professional aerospace engineering design and certification company based in Kansas. He started his career over 25 years ago as an avionics technician and troubleshooter in the United States Navy, where he served with distinction and was honorably discharged. As a Gulf War Veteran, Mr. Dahna joined the civilian aviation sector where he has worked on, designed, and certified a wide variety of new products and articles for the last 20 years. He has held positions as a senior electrical engineer for a large aircraft manufacturer and served as the Certification Coordinator for all the factory owned service/modification centers in the United States, providing all interface with the geographic FAA Aircraft Certification Offices for all standard certification STC projects. Following his time at the aircraft manufacturer, he assisted in the development of an STC ODA for a consulting company and held the position as the Principal Certification Engineer, while also training as an alternate ODA administrator.

He has been actively involved in several hundred certification projects, ranging from TC, STC, PMA, and Major Alterations. In addition to duties as a consultant DER (14 CFR Part 23 and 25), including major alterations, he holds positions as a unit member on several TC and STC Organization Designation Authorizations (ODA). Mr. Dahna's combination of practical experience, analytical knowledge, and in-depth certification experience brings a unique and viable approach to aircraft certification in an uncomplicated yet thorough manner.

2025 Aerospace Short Course: FAA Type Certification Plan Development

C. Bruce Stephens

C. Bruce Stephens is an HIRF/Lightning/EWIS ODA UM/AR at the Boeing Company and a consultant DER at his company, Stephens Aviation, with a wealth of experience in High Intensity Radiated Fields (HIRF) and Lightning protection of Aircraft. Stephens retired from Hawker Beechcraft after 28 years of service. He has HIRF/Lightning experience on both Part 23 and Part 25 including composite aircraft. Stephens is working with the Boeing Team to develop EWIS requirements and means of compliance on several aircraft projects. Stephens is a Six-Sigma/Lean Master Black Belt consultant, developing implementation and training materials, and teaches at a number of universities, including Webster University and Southwestern College. He has an executive MBA and M.S. in Management from Friends University and a B.S. in Industrial Technology from Wichita State University.

2025 Aerospace Short Course: Aircraft Lightning: Requirements, Component Testing, Aircraft Testing and Certification

Ray Taghavi

Dr. Ray Taghavi is "John E. and Winifred E. Sharp Professor" & Associate Chair of the Aerospace Engineering Department at the University of Kansas. He teaches and conducts research in jet propulsion, rocket propulsion, aircraft reciprocating engines, fluid mechanics, aircraft aerodynamics, and advanced experimental techniques. Before joining the KU Faculty in 1991, he was a research engineer at NASA John Glenn Research Center, conducting experimental research on supersonic jet noise reduction techniques, acoustic excitation of free shear layers, and stability and control of swirling flows. He is the co-inventor and patent holder for a "supersonic vortex generator" and a "Novel Air Data Sensor with Power Scavenge System" for subsonic aircraft. He is a Fellow of the American Society of Mechanical Engineers (ASME) and an Associate Fellow of the American Institute of Aeronautics & Astronautics (AIAA). Dr. Taghavi has been the recipient of the Abe M. Zarem Educator Award from AIAA, the Ralph R. Teetor Educational Award from SAE, the John E. and Winifred E. Sharp Award from the KU School of Engineering (twice), Henry E. Gould Award from the KU School of Engineering, and is a four-time winner of the Aerospace Engineering Outstanding Educator Award from the graduating seniors of the department. Dr. Taghavi has received his Ph.D. in Aerospace Engineering from the University of Kansas in 1988.

2025 Aerospace Short Course: Propulsion Systems for UAVs and General Aviation Aircraft