Volume 2; 13 AUGUST 2015, Incorporating Change 5, Dec 2022. This handbook familiarizes the aircrew member with weather services, charts, and codes. It serves as a text and informational guidance for flight training programs, all U.S. Air Force instrument refresher training, flight instruction programs, and various unit and individual flying training programs. It applies to all Army and Air Force (AF) units and personnel, including the Air Force Reserve Command (AFRC), and Air National Guard (ANG). This regulation also applies to the Active Army, the Army National Guard/Army National Guard of the United States, and the U.S. Army Reserve, unless otherwise stated. The information contained in this publication meets or exceeds the information contained in FM 1-230, dated 30 September 1982 which will be rescinded with the publication of this interservice publication. Support described may also be applied to aviation within the U.S. Army and its reserve components of the Army Reserve and the Army National Guard. It is issued to each instructor and student involved in undergraduate flight training programs as well as to each flying unit. This handbook, when used with related flight directives and publications, provides weather guidance for visual and instrument flight under most circumstances. It is not a substitute for sound judgment.