|Other Retailer||Price Checked Time||Their Price in NZD||Our Price|
|Amazon UK||yesterday||57.77||$40.53||You save $17.24|
|Amazon US||3 days ago||50||$40.53||You save $9.47|
William K. Kershner was a certified flight instructor, a naval aviator, and a corporate pilot. The recipient of many aviation awards, including the General Aviation Flight Instructor of the Year, he is the author of the Flight Manuals series. William C. Kershner is a certified commercial flight instructor and an airline transport pilot. He lives near Sewanee, Tennessee.