Headquarters Tour

Woody Cahall, Vice President, Pilot Information Center, is responsible for the Pilot Information Center, Medical Certification department and Research Center. The department is also responsible for producing much of the technical information on the AOPA Web site. In the years prior to joining AOPA, Woody was involved in a wide range of general aviation activities. Woody has accumulated more than 10,000 hours of flight time in a variety of aircraft and operations. Among his airman credentials are commercial pilot and flight instructor certificates and instrument and multiengine ratings as well as Commercial glider and seaplane. Woody is a U.S. Army veteran and served a tour in Viet Nam.

Ferdi Mack, Supervisor, Pilot Information Center, joined the Pilot Information Center team in 2011. He has a B.S. and M.S. in Electrical and Computer Engineering from Carnegie Mellon University. Ferdi spent seven years in Silicon Valley as a hardware developer for companies such as Silicon Graphics and NVIDIA, before moving home to Frederick to pursue aviation. He spent his childhood flying with his parents, who are both private pilots. Ferdi holds a commercial ASEL/AMEL as well as flight and ground instructor certificates. He is a native of Frederick and has been involved at the airport since an early age, including most recently as a flight instructor.

Rodney Martz, Senior Aviation Technical Specialist, came to AOPA in 1990 from the finance and banking industry. He is a 2,000-hour private pilot who started in aviation as a lineman during college summers back in 1969. Rodney has a diverse background including real estate, FBO operations, maintenance, finance, and corporate operations. He currently owns a D35 Bonanza and a Cessna 140, both of which are getting “long-term” annuals!

Craig Brown, Senior Aviation Technical Specialist, joined the Pilot Information Center in August 1997. Craig holds A&P, ATP, and CFI certificates. In his 25 years of aviation experience, he has turned wrenches, flight instructed, flown traffic watch and charter, flown internationally, and has both fixed and rotor wing experience in 97 aircraft types. He has logged over 9,700 hours of flight time and over 100,000 member requests for assistance and information since starting at AOPA. Craig lives with his wife and children near historic Gettysburg, Pennsylvania.

Patrick Timmerman, Senior Aviation Technical Specialist, joined the Pilot Information Center in 2009. Patrick holds a Bachelor of Science degree in Communications from Western Carolina University. He is also a CFI and CFII and has given over 1300 hours of instruction and has over 2200 hours total time. Patrick has taught at several flight schools in southeastern Virginia and the beautiful Northern Mariana Islands. While out in the western Pacific he also flew Part 135 on-demand charter. Patrick and his wife Maria have two sons, Joshua and Matthew. 

Mark Milkovitz, Aviation Technical Specialist, joined the Pilot Information Center in 2011. Mark has an Associate of Applied Science Degree in Flight Training from the Community College of Baltimore County and is working towards his Bachelor of Science Degree in Aircraft Maintenance Management from Embry-Riddle University. Mark has 8 years of experience as a flight instructor as well as 13 years of experience as an aircraft mechanic working on large transport aircraft, such as Boeing 727,737,757,767 and the Lockheed C-141. Mark completed most of his flight training in the Seattle area and now lives in Baltimore with his wife. He currently holds a Single and Multi-engine Commercial License as well as CFI and IGI certificates. Mark is always looking to build his tailwheel time but will never turn down a flight in any aircraft.

John Isenberger, Aviation Technical Specialist, joined the PIC team in September, 2011. He holds a Bachelor's degree in Marketing and Finance from the University of Massachusetts. John is a multi-engine and instrument-rated flight instructor with 1100 hours of instruction given. Prior to employment at AOPA, John's background includes flying the EMB 145 for American Eagle Airlines, the B727-200 for Champion Air and the PC-12 for Plane Sense. Prior to his aviation experiences, John spend six years in the USAF as a mechanic. He has lived in Saipan, Germany, Iceland, and Japan. John currently lives with his family in Frederick, Maryland.

Kathy Dondzila, Manager, Technical Communications, joined the Pilot Information Center team in 2001. Kathy is a long-timer at AOPA with 23 years of experience working in various capacities within the association, including the Air Safety Institute, Seaplane Pilots Association, and AOPA’s Marketing Department. Kathy’s background is in publications and much of her work in the Pilot Information Center involves writing and managing technical information for members. Kathy is a 325-hour instrument-rated private pilot and holds an instrument and advanced ground instructor certificate. She also holds a Master's degree in Business Administration.

Eddie Tyeryar, Digital Products Support Specialist, came to AOPA in 2000 to provide Local Area Network and Telecommunications support for the entire association, and then made the move to the Pilot Information Center in December of 2007. Eddie has a strong understanding of software support and web technology troubleshooting, but admits that it’s "getting under the hood" and tinkering with hardware that he really enjoys. Eddie prides himself on having a very close relationship with the AOPA’s IT and Web Development Departments. It is a liaison position that allows him to provide valuable assistance to members on the full range of AOPA's digital products.

Aaron Pifer, Aviation Technical Specialist, was born and raised in Keedysville, MD. He fell in love with aviation at an air show here at FDK when around five years old. After high school, he earned  a B.S. from ERAU Daytona, where he interned with Delta Air Lines in their Flight Ops department. Aaron “flew” full-motion simulators after work hours including the MD 88/90, 737, B757, B767, and B777. He was also a scholarship recipient of the Florida Aviation Trades Association and involved in the AOA Aeronautical Honors Society. Aaron holds AGI/IGI certificates, Commercial ASEL/AMEL Instrument, CFI/CFII certificates. He worked for Southwest Airlines, and for the FAA as a Developmental Air Traffic Control Specialist before coming to work at AOPA.  

Pete Arnold, Aviation Technical Specialist, joined the Pilot Information Center in 2012. Pete has an Associate of Applied Science Degree in Paralegal Studies from the National Paralegal College. Prior to joining AOPA he was a line captain for a large regional airline and later served as their Director of Operations. Following his airline career came a decade of corporate flying. Since his first solo in 1963, Pete has accumulated in excess of 14,500 hours in aircraft ranging from the Piper Cub to the DC-9. Pete holds an ATP license with five type ratings and CFI certificates.

Adam Williams, Aviation Technical Specialist, joined the Pilot Information Center in 2012. He holds a Bachelor's Degree in Political Science and an Associate's Degree in Aviation Science. Adam is a commercial pilot and flight instructor with over 2,000 hours of flight experience ranging from light-sport airplanes to turboprops. Before coming to AOPA, he was Captain at an international on-demand charter operator and has also worked as an aerial mapping pilot. Adam served in the U.S. Air Force where he repaired avionics on the F-16 fleet.

Jose A. Tuya, Jr., Aviation Technical Specialist, is a CFI, CFII, MEI and an active flight instructor. He is also working on his Master's Degree in human resources and development. He conducted most of his flight training at Indiana State University, and has been flying since he was 15 years old. He has worked as a network administrator, line service technician, and flys both fixed and rotary wing aircraft. He served in the United States Air Force as an Imagery Analyst. When not working or flying, Jose enjoys gaming with friends, flying aerobatics, and being active in the outdoors. He has also been a CAP member since he was 14 years old. Jose lives in Frederick, MD and has been employed with AOPA since August 2012.

Medical Certification

For many of our members, this team is the reason they are able to fly! Our medical certification specialists respond annually to more than 20,000 phone calls and e-mails that cover the spectrum of medical conditions from heart disease, cancer, and diabetes to color vision and kidney stones. The medical staff works closely with the FAA Aerospace Medical Certification Division in Oklahoma City and with the Office of Aerospace Medicine and Federal Air Surgeon in Washington, DC to ensure that the information we provide members is accurate and comprehensive and that our advocacy efforts result in the best possible outcome for members.

Gary Crump, Director, Medical Certification Services, has been with AOPA since 1987.  A native Texan from the Panhandle city of Amarillo, he was an Operating Room Technician for 10 years and a professional firefighter and Emergency Medical Technician for six years before returning to school to complete his bachelor’s degree in Aviation Management at Florida Tech in Melbourne, Florida. He has more than 20 years of experience in dealing with FAA medical certification issues, and stays in contact with all the key players in the FAA aeromedical community. He holds a commercial pilot certificate with instrument, multiengine, and single-engine sea ratings. He and his wife, Lisa, live under the shadow of P40, the prohibited airspace surrounding the Naval Support Facility known as Camp David in the northern Maryland town of Thurmont.

Jo Ann Wilson, Senior Medical Certification Technician, joined the Medical Certification department in 1994. She attended the Frederick Community College School of Nursing and has worked in numerous fields of nursing, including hospital medical surgical care, and the emergency room department. She was an Activity Director at several local nursing and retirement homes and one of the founding members of the Frederick County Elder Services Provider Council. In her spare time, Jo Ann is active in her local chapter of the Order of the Eastern Star and also is Chairman of the American Cancer Society’s Relay for Life Survivor Reception. Jo Ann, her husband Jim, and her mom reside near Libertytown, Maryland. They have two grown children, Amanda and Anthony, who with his wife, Jacki, welcomed a daughter, Anna Marie in March 2009. 

Jacquie Brown, Senior Medical Certification Technician, joined the Medical Certification group in October 2004. She has a diverse medical and customer service background, which includes Frederick Memorial Hospital, American Homepatient, Baltimore Headache Institute, and York Health Systems. She is married and the mother of two and resides in southern Pennsylvania.

Marianne Hays, Medical Certification Specialist, joined the Medical Certification department in June 2007. She graduated from the Medix School in Baltimore, Maryland and has worked for more than 15 years in the medical field. Her medical office experience includes internal medicine, ophthalmology, and medical laboratories. Her husband has been a pilot for over 40 years. She enjoys flying with him and combining her aviation knowledge with her medical background to assist fellow aviators. Marianne resides in Frederick with her husband, Bill, and two sons. They spend many weekend hours flying from Frederick Airport to many area airports, and she hopes to further her aviation experience by pursuing her pilot certificate in the future. 

Regina Osburn, Medical Certification Specialist, joined the Medical Certification group in December 2011. She has held various medical positions over the years having worked in hospitals, clinics, and doctors' offices. She was an emergency department technician for 15 years and currently serves as a volunteer Nationally Registered and Maryland State certified paramedic in her community and has done so for over 20 years. Regina resides in Frederick, Maryland with her three children and is planning to pursue her private pilot's certificate in the near future.