How to Care For and Maintain Your Airplane Delp. There are dirty planes, clean planes, and really clean planes. Keep yours looking like new with these expert maintenance tips. What does the FAA allow? What type of cleaner should you use? These and many other questions are answered to give you the confidence you need to do it yourself. Sftbd., 8 1/2"x 11", 176 pgs., 300 ill.Delp, Ron is the author of 'How to Care for & Maintain Your Airplane - Ron Delp - Paperback' with ISBN 9780879385521 and ISBN 0879385529.