"Mental Math for Pilots Second Edition" by Ronald D. McElroy is a study guide specifically tailored for pilots, focusing on mathematical concepts relevant to the aviation industry. Published by Aviation Supplies & Academics, Incorporated in 2004, this trade paperback book is part of the Professional Aviation Series. With 128 pages, this edition includes illustrations and covers topics such as aviation calculations, navigation, and flight planning. McElroy's expertise in the field of aviation and mathematics makes this book a valuable resource for pilots looking to enhance their mathematical skills and knowledge in the realm of flying.