Leadership

TDA’s management team is comprised of seasoned engineering and computer science professionals with direct, hands-on experience in design and analysis, engineering and software development. In addition to managing the company, each of TDA’s managers performs engineering and software development tasks for our clients on a daily basis. Part of TDA’s philosophy is that our managers never lose sight of the technical work we perform.
Scott Bradfield
President
Bob Merrill
Vice President
Mr. Bradfield has over 26 years of experience in aeronautical engineering. Predominately in charge of the day-to-day operations of TDA, Mr. Bradfield has also found time to assist the US Navy in their P-3 Service Life Assessment Program (SLAP). In support of this program, his duties included preparation of the Statement of Work and resulting proposal for industry award, ongoing contract modifications, coordination with Foreign Military Sales (FMS) participants and overall programmatic support. Mr. Merrill has over 31 years of experience in aircraft structures engineering. In addition to being TDA’s Vice President, Mr. Merrill provides analytical support in the computation of inventory projections based on aircraft fatigue lives as reported in the Navy’s Structural Appraisal of Fatigue Effects (SAFE) program and continues to provide support to NAVAIR personnel in the operation of the Health of Naval Aviation (HONA) program. Mr. Merrill also provides oversight on the collection and storing of all US Navy incoming SDRS flight recorder data from the fleet, including data captured through TDA’s web-based Fleet Metrics software.
Dr. Nagaraja Iyyer, PhD
Dir. of Engineering – Falls Church
Dr. Chance McColl, PhD
Dir. of Engineering – Marietta
Dr. Iyyer has over 30 years of experience in aircraft structures engineering and application program development. The majority of his experience has been supporting the US Navy in its aircraft structural life surveillance and service life assessment and extension programs of various aircraft. Dr. Iyyer has conducted numerous risk assessment studies to support safety of flight decisions for various aircraft components. His current interests are in developing reliable life prediction models for engineers and management, identifying and mitigating age-related problems, and developing new damage detection techniques. Dr. Iyyer has won numerous awards during his career, including the 2006 Naval Air Warfare Center Division’s Area Commander’s Award for his ground breaking development of a probabilistic risk assessment methodology and metrics to quantify the risk of continued US Navy P-3 flight operations. Dr. McColl has over 20 years of combined experience in aeronautical engineering and software development. Dr. McColl manages the Marietta, GA office of TDA and oversees TDA’s loads engineering (fixed wing and rotary wing) and software development efforts, including the development of a number of engineering applications. Dr. McColl received his BS in Aerospace Engineering from the University of Colorado at Boulder and his MS and PhD in Aerospace Engineering from Georgia Tech.