Greenwich AeroGroup Names Robert Medina Vice President and General Manager of Western Aircraft

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August 11, 2026

Greenwich AeroGroup Names Robert Medina Vice President and General Manager of Western Aircraft

Greenwich AeroGroup announced today that Robert Medina has been named vice president and general manager of Western Aircraft. Medina will succeed Austin Shontz, who plans to retire following a leadership transition.

An aviation industry veteran with 39 years of experience, Medina has held leadership roles across maintenance, repair and overhaul operations, customer support, business development and international market expansion. He most recently served as senior director and general manager of Gulfstream Aerospace’s Mesa Service Center, where he was responsible for the facility’s operations, customer experience, growth and financial performance.

His previous roles include regional vice president and other senior service center operations and customer support positions with Gulfstream Aerospace, customer relations and regional leadership roles with Rolls-Royce North America, and maintenance and engineering operations leadership with American Airlines.

“Robert brings extensive MRO experience, a strong understanding of complex aviation operations and a clear commitment to the customer,” said Jim Ziegler, vice chairman of Greenwich AeroGroup. “He has built and led successful teams, strengthened important customer relationships and guided organizations through periods of growth and change. We believe he is well prepared to lead Western Aircraft into its next chapter.”

Medina holds a doctorate and a master's degree in business administration from the University of Phoenix. He also holds a bachelor's degree in business accounting, an associate degree in aviation applied science from Spartan School of Aeronautics and an active FAA airframe and powerplant license.

Ziegler also recognized Shontz for his leadership and service to Western Aircraft.

“Austin has provided steady, thoughtful leadership throughout his time with Western Aircraft,” Ziegler said. “His operational experience, knowledge of the industry and commitment to our employees and customers have contributed significantly to the company’s growth. We are grateful for his many contributions and appreciate his support in helping ensure a smooth transition.”

Shontz joined Western Aircraft as vice president and general manager in September 2015. During his tenure, he led the company's MRO and FBO operations, guiding the organization through continued growth and two expansions.