This sign is a 12" by 12" square turned on it's side to make a diamond. it is yellow and black and says Caution Low Flying Aircraft on it. It also includes an image of a biplane.
Welcome to the first edition of Pilot Weather: From Solo to the Airlines. It includes 394 pages, over 400 diagrams and pictures, plus a 550-entry glossary. This book consists of 33 chapters on...