If you are involved in aviation, you will deal with administrative agency regulations far more frequently than any other area of the law. Indeed, you will probably be confronted with making decisions based on the Federal Aviation Regulations (FARs) on a daily basis. Those regulations also establish standards of legal behavior by which a judge or jury may later decide whether you and your employer are legally liable for negligence in the event of an aircraft accident. Hardly any aspect of aviation today is unaffected by these regulations. That is why we begin with an examination of administrative law, with particular focus on the role of the Federal Aviation Administration (FAA) in administering the federal program of air safety regulation. Since the 1920s, Congress has created a plethora of regulatory agencies to administer the many federal programs it has initiated. Indeed, federal agencies continue to grow and multiply, under Democratic and Republican administrations alike.