Some site functionality, including user login and shop activity, are currently limited.
Click here to upgrade to a newer version of Internet Explorer or Microsoft Edge.
EAA.Org is currently undergoing some maintenance. Some pages or functions may not work correctly.
John PattersonM.D., AME
John Patterson, M.D., AME. Dr. Patterson is the author of the excellent, “Ask the AME”, articles in the Vintage Airplane magazine.