Jim earned his degree in Aviation Management from St. Cloud State University in 2009 and began his career that same year in Cheyenne, WY. For the next 3 years, he progressed through the Operations Department and in 2012 became the Deputy Director of that airport. While in Cheyenne, Jim was an active member of the Wyoming Airport Operator’s Association and the American Association of Airport Executives holding a Certified Member (C.M.) designation from that organization.

In April 2018, Jim became the Director at Wittman. As a Wisconsin native, he is excited to be back in the Badger state after 14 years living in both Minnesota and Wyoming. While not at the Airport, he enjoys spending time outdoors including camping, hiking, and fishing with his wife Lauren. Also a former student pilot, he plans to get back into flying, earn his private pilot’s license and eventually own an aircraft.

Phone: (920) 236-4930



Charles earned his B.S. degree in Aeronautical Science, Airport Management from St. Louis University in 2002. He is a U.S. Air Force Veteran where he finished his service as a construction project inspector at Malmstrom AFB. Charles continued working as a construction project manager  for 6 years in San Antonio TX at multiple engineering firms. Charles came to Sheboygan Wisconsin as the Airport Superintendent of KSBM in 2014. He spent 5 years working in that capacity where he was successful in bringing US Customs & terminal building design and completing many construction projects. Charles was an active member of the Wisconsin Airport Management Association (WAMA) where he served as Treasurer, Vice President and President. He also is a member of the American Association of Airport Executives (AAAE) with the Certified Member (C.M.) designation from that organization.

In February 2020, Charles became the Deputy Director at Wittman Regional Airport. He is excited to continue his work in aviation in Wisconsin and looks forward to working with Jim Schell furthering his vision for the airport and tackling the challenges that may lie ahead.

(920) 236-4935



Diana began her lifelong profession as an administrative assistant upon completion of secretarial school following a successful high school career. In 1977 Diana was a secretary for the Square-D company where she stayed until the birth of her son in 1988. In 1991 Diana joined the Wittman Regional Airport team as a part-time secretary under former Airport Director Rick Sokol. She moved through a few various posts within Winnebago County until 2003 when Ruth Elliott became the new Airport Director. At that time Diana was asked to return to her previous post as Administrative Assistant to the Airport Director due to her previous experience and strong work ethic.

Today Diana performs administrative duties for Wittman Regional Airport under the direction of Airport Director Jim Schell. She also supports the work of Pete Rausch, Operations & Maintenance Manager.


Phone: (920) 236-4930



Pete is a lifelong resident of Winnebago County and has dedicated the majority of his career to service at multiple departments within the county. Upon completion of vocational training in metal fabrication, hydraulic system, and automotive repair, Pete began working at Advance Lifting Systems and Island Excavating. His experiences with commercial construction and manufacturing have aided him greatly throughout his tenure in both the public and private sectors.

Pete began his career with Winnebago County in 1991 as a mechanic and equipment operator at the Highway Department. He also spent time working on multiple projects in the paving division of that department. Pete brought his strong work ethic to Wittman Regional Airport in 1995. For more than 20 years, Pete has worked and progressively taken on additional responsibilities at the airport, earning a promotion to his current position in 2016. Pete oversees the Operations & Maintenance Department at the Airport, being directly responsible for various capital improvement projects and the day-to-day operations of the airport.

Phone: (920) 236-4930

Operations Department


(From left to right) Daniel Hoerig,  Jeff Leichtfuss, Peter Rausch, Jason Stuker, Christopher Shaffer, and Ed Carpenter. Also featuring the Airport’s Oshkosh P-Series Truck with a Wausau WRO “Rollover” plow.