Book excerpt: Applicants studying for the Airline Transport Pilot and Aircraft Dispatcher Knowledge Exams will find sample questions for every question in the Federal Aviation Administration (FAA) exam database along with their answers and explanations, in this guide. All of the more than 900 questions from the exam are arranged by subject category and are accompanied by specific study material. Updates are provided to account for FAA test-question changes throughout the publication year via the ASA website or e-mail. Each question is followed by the answer, an explanation of the answer, and a reference and subject code for further study in FAA materials. Regulations, weather and weather services, flight physiology, and aircraft performance are among the subjects covered.