This series of textbooks and supplements for pilots, student pilots, aviation instructors, and aviation specialists provides information on every topic needed to qualify for and excel in the field of aviation. Most FAA Knowledge Exams' questions are taken directly from the information presented in these texts. The official source for the weather service questions used in all FAA knowledge exams, this text explains basic weather service as well as the interpretation and use of coded weather reports, forecasts, and observed and prognostic weather charts. TAF/METAR information is updated to reflect current procedures consistent with all the changes detailed in the Aeronautical Information Manual (AIM). This is FAA advisory circular AC 00-45E.