John C. Eckalbar is an airline transport pilot and instrument flight instructor for single and multiengine airplanes. He has been a pilot for ExecutiveJet and has flown in the Federal Express feeder system. He has been an active FAR Part 135 charter pilot with air taxi and cargo experience in a wide range of general aviation airplanes, from Skylanes, 210s, and Bonanzas to Barons, 400 series Cessnas, Caravans, King Airs, and Citations.

At one time or another he has owned a Grumman American TR-2, three Bonanzas, an E55 Baron, and a Piper Seneca II. He is the author of the books IFR: A Structured Approach, Flying High Performance Singles and Twins and Flying the Beech Bonanza as well as the creator of the video tape "Instrument Flying By the Numbers." John is one of the original ground and flight instructors in the American Bonanza Society's highly regarded Bonanza and Baron Pilot Proficiency Programs, and he is a co-author of the manuals for those classes. He is also the author of numerous articles in general aviation magazines.

He holds a Ph.D. from the University of Colorado and is a Professor in the California State University system. He has published many articles on mathematics for economists and been the principal investigator on a National Science Foundation research project on dynamics and stability.